64657454 has 4 divisors (see below), whose sum is σ = 96986184. Its totient is φ = 32328726.

The previous prime is 64657447. The next prime is 64657457. The reversal of 64657454 is 45475646.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64657457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16164362 + ... + 16164365.

It is an arithmetic number, because the mean of its divisors is an integer number (24246546).

Almost surely, 2^64657454 is an apocalyptic number.

64657454 is a deficient number, since it is larger than the sum of its proper divisors (32328730).

64657454 is a wasteful number, since it uses less digits than its factorization.

64657454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32328729.

The product of its digits is 403200, while the sum is 41.

The square root of 64657454 is about 8040.9858848278. The cubic root of 64657454 is about 401.3650322518.

The spelling of 64657454 in words is "sixty-four million, six hundred fifty-seven thousand, four hundred fifty-four".