64397454 has 32 divisors (see below), whose sum is σ = 141882624. Its totient is φ = 19322880.

The previous prime is 64397419. The next prime is 64397477. The reversal of 64397454 is 45479346.

64397454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2062 + ... + 11534.

It is an arithmetic number, because the mean of its divisors is an integer number (4433832).

Almost surely, 2^64397454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64397454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70941312).

64397454 is an abundant number, since it is smaller than the sum of its proper divisors (77485170).

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

64397454 is a wasteful number, since it uses less digits than its factorization.

64397454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9592.

The product of its digits is 362880, while the sum is 42.

The square root of 64397454 is about 8024.8024274745. The cubic root of 64397454 is about 400.8263209753.

The spelling of 64397454 in words is "sixty-four million, three hundred ninety-seven thousand, four hundred fifty-four".