1264629608 has 64 divisors (see below), whose sum is σ = 2750371200. Its totient is φ = 539418880.

The previous prime is 1264629599. The next prime is 1264629617. The reversal of 1264629608 is 8069264621.

It is an interprime number because it is at equal distance from previous prime (1264629599) and next prime (1264629617).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101378 + ... + 113166.

It is an arithmetic number, because the mean of its divisors is an integer number (42974550).

Almost surely, 2^1264629608 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 1264629608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375185600).

1264629608 is an abundant number, since it is smaller than the sum of its proper divisors (1485741592).

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

1264629608 is a wasteful number, since it uses less digits than its factorization.

1264629608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11882 (or 11878 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 1264629608 is about 35561.6311211958. The cubic root of 1264629608 is about 1081.4035273191.

The spelling of 1264629608 in words is "one billion, two hundred sixty-four million, six hundred twenty-nine thousand, six hundred eight".