64642254 has 16 divisors (see below), whose sum is σ = 133455360. Its totient is φ = 20852280.

The previous prime is 64642243. The next prime is 64642261. The reversal of 64642254 is 45224646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173584 + ... + 173955.

It is an arithmetic number, because the mean of its divisors is an integer number (8340960).

Almost surely, 2^64642254 is an apocalyptic number.

64642254 is an abundant number, since it is smaller than the sum of its proper divisors (68813106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64642254 is a wasteful number, since it uses less digits than its factorization.

64642254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347575.

The product of its digits is 46080, while the sum is 33.

The square root of 64642254 is about 8040.0406715389. The cubic root of 64642254 is about 401.3335781490. Note that the first 3 decimals are identical.

The spelling of 64642254 in words is "sixty-four million, six hundred forty-two thousand, two hundred fifty-four".