64629697 has 16 divisors (see below), whose sum is σ = 74923200. Its totient is φ = 55131840.

The previous prime is 64629673. The next prime is 64629703. The reversal of 64629697 is 79692646.

It is a cyclic number.

It is not a de Polignac number, because 64629697 - 2⁷ = 64629569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64629697.

It is not an unprimeable number, because it can be changed into a prime (64629797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21363 + ... + 24199.

It is an arithmetic number, because the mean of its divisors is an integer number (4682700).

Almost surely, 2^64629697 is an apocalyptic number.

It is an amenable number.

64629697 is a deficient number, since it is larger than the sum of its proper divisors (10293503).

64629697 is a wasteful number, since it uses less digits than its factorization.

64629697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976.

The product of its digits is 979776, while the sum is 49.

The square root of 64629697 is about 8039.2597296020. The cubic root of 64629697 is about 401.3075896158.

The spelling of 64629697 in words is "sixty-four million, six hundred twenty-nine thousand, six hundred ninety-seven".