64364478 has 8 divisors (see below), whose sum is σ = 128728968. Its totient is φ = 21454824.

The previous prime is 64364473. The next prime is 64364483. The reversal of 64364478 is 87446346.

It is an interprime number because it is at equal distance from previous prime (64364473) and next prime (64364483).

It is a sphenic number, since it is the product of 3 distinct primes.

64364478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64364471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5363701 + ... + 5363712.

It is an arithmetic number, because the mean of its divisors is an integer number (16091121).

Almost surely, 2^64364478 is an apocalyptic number.

64364478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64364478 is a wasteful number, since it uses less digits than its factorization.

64364478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10727418.

The product of its digits is 387072, while the sum is 42.

The square root of 64364478 is about 8022.7475343550. The cubic root of 64364478 is about 400.7578922580.

The spelling of 64364478 in words is "sixty-four million, three hundred sixty-four thousand, four hundred seventy-eight".