1275704064 has 216 divisors, whose sum is σ = 3879937152. Its totient is φ = 402554880.

The previous prime is 1275704047. The next prime is 1275704081. The reversal of 1275704064 is 4604075721.

1275704064 is a `hidden beast` number, since 1 + 27 + 570 + 4 + 0 + 64 = 666.

It is an interprime number because it is at equal distance from previous prime (1275704047) and next prime (1275704081).

It is a super-2 number, since 2×1275704064² = 3254841717812232192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3785304 + ... + 3785640.

It is an arithmetic number, because the mean of its divisors is an integer number (17962672).

Almost surely, 2^1275704064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275704064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1939968576).

1275704064 is an abundant number, since it is smaller than the sum of its proper divisors (2604233088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1275704064 is a wasteful number, since it uses less digits than its factorization.

1275704064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 1275704064 is about 35716.9996500266. Note that the first 3 decimals coincide. The cubic root of 1275704064 is about 1084.5510014040.

Adding to 1275704064 its reverse (4604075721), we get a palindrome (5879779785).

The spelling of 1275704064 in words is "one billion, two hundred seventy-five million, seven hundred four thousand, sixty-four".