64663235 has 64 divisors (see below), whose sum is σ = 102961152. Its totient is φ = 37863936.

The previous prime is 64663231. The next prime is 64663279. The reversal of 64663235 is 53236646.

It is a cyclic number.

It is not a de Polignac number, because 64663235 - 2² = 64663231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a junction number, because it is equal to n+sod(n) for n = 64663195 and 64663204.

It is not an unprimeable number, because it can be changed into a prime (64663231) 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, 387122 + ... + 387288.

It is an arithmetic number, because the mean of its divisors is an integer number (1608768).

Almost surely, 2^64663235 is an apocalyptic number.

64663235 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64663235 is a deficient number, since it is larger than the sum of its proper divisors (38297917).

64663235 is a wasteful number, since it uses less digits than its factorization.

64663235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its digits is 77760, while the sum is 35.

The square root of 64663235 is about 8041.3453476393. The cubic root of 64663235 is about 401.3769938636.

The spelling of 64663235 in words is "sixty-four million, six hundred sixty-three thousand, two hundred thirty-five".