64420470 has 48 divisors (see below), whose sum is σ = 174781152. Its totient is φ = 16431360.

The previous prime is 64420451. The next prime is 64420481. The reversal of 64420470 is 7402446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13491 + ... + 17630.

It is an arithmetic number, because the mean of its divisors is an integer number (3641274).

Almost surely, 2^64420470 is an apocalyptic number.

64420470 is an abundant number, since it is smaller than the sum of its proper divisors (110360682).

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

64420470 is a wasteful number, since it uses less digits than its factorization.

64420470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31157 (or 31154 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 64420470 is about 8026.2363533601. The cubic root of 64420470 is about 400.8740677892.

The spelling of 64420470 in words is "sixty-four million, four hundred twenty thousand, four hundred seventy".