64257436 has 6 divisors (see below), whose sum is σ = 112450520. Its totient is φ = 32128716.

The previous prime is 64257409. The next prime is 64257463. The reversal of 64257436 is 63475246.

It is an interprime number because it is at equal distance from previous prime (64257409) and next prime (64257463).

It is a junction number, because it is equal to n+sod(n) for n = 64257395 and 64257404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8032176 + ... + 8032183.

Almost surely, 2^64257436 is an apocalyptic number.

It is an amenable number.

64257436 is a deficient number, since it is larger than the sum of its proper divisors (48193084).

64257436 is a wasteful number, since it uses less digits than its factorization.

64257436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16064363 (or 16064361 counting only the distinct ones).

The product of its digits is 120960, while the sum is 37.

The square root of 64257436 is about 8016.0736024565. The cubic root of 64257436 is about 400.5356074914.

It can be divided in two parts, 6425 and 7436, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 64257436 in words is "sixty-four million, two hundred fifty-seven thousand, four hundred thirty-six".