64305478 has 4 divisors (see below), whose sum is σ = 96458220. Its totient is φ = 32152738.

The previous prime is 64305469. The next prime is 64305487. The reversal of 64305478 is 87450346.

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

It is an interprime number because it is at equal distance from previous prime (64305469) and next prime (64305487).

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, 16076368 + ... + 16076371.

It is an arithmetic number, because the mean of its divisors is an integer number (24114555).

Almost surely, 2^64305478 is an apocalyptic number.

64305478 is a deficient number, since it is larger than the sum of its proper divisors (32152742).

64305478 is a wasteful number, since it uses less digits than its factorization.

64305478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32152741.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 64305478 is about 8019.0696467857. The cubic root of 64305478 is about 400.6354026243.

The spelling of 64305478 in words is "sixty-four million, three hundred five thousand, four hundred seventy-eight".