64769760 has 384 divisors, whose sum is σ = 261273600. Its totient is φ = 14837760.

The previous prime is 64769753. The next prime is 64769767. The reversal of 64769760 is 6796746.

It is an interprime number because it is at equal distance from previous prime (64769753) and next prime (64769767).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64769767) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1378057 + ... + 1378103.

It is an arithmetic number, because the mean of its divisors is an integer number (680400).

Almost surely, 2^64769760 is an apocalyptic number.

64769760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64769760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130636800).

64769760 is an abundant number, since it is smaller than the sum of its proper divisors (196503840).

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

64769760 is a wasteful number, since it uses less digits than its factorization.

64769760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 64769760 is about 8047.9662027123. The cubic root of 64769760 is about 401.5972799189.

It can be divided in two parts, 647 and 69760, that added together give a palindrome (70407).

The spelling of 64769760 in words is "sixty-four million, seven hundred sixty-nine thousand, seven hundred sixty".