64129653 has 24 divisors (see below), whose sum is σ = 107451968. Its totient is φ = 36096192.

The previous prime is 64129651. The next prime is 64129679. The reversal of 64129653 is 35692146.

It is a happy number.

64129653 is a `hidden beast` number, since 641 + 2 + 9 + 6 + 5 + 3 = 666.

It is not a de Polignac number, because 64129653 - 2¹ = 64129651 is a prime.

It is a super-2 number, since 2×64129653² = 8225224787800818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64129651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3376 + ... + 11817.

Almost surely, 2^64129653 is an apocalyptic number.

64129653 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

64129653 is a deficient number, since it is larger than the sum of its proper divisors (43322315).

64129653 is a wasteful number, since it uses less digits than its factorization.

64129653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15273 (or 15270 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 64129653 is about 8008.0992126721. The cubic root of 64129653 is about 400.2699282226.

The spelling of 64129653 in words is "sixty-four million, one hundred twenty-nine thousand, six hundred fifty-three".