64470893 has 8 divisors (see below), whose sum is σ = 66206400. Its totient is φ = 62762844.

The previous prime is 64470883. The next prime is 64470937. The reversal of 64470893 is 39807446.

It is not a de Polignac number, because 64470893 - 2⁴ = 64470877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64470893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64470823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625880 + ... + 625982.

It is an arithmetic number, because the mean of its divisors is an integer number (8275800).

Almost surely, 2^64470893 is an apocalyptic number.

It is an amenable number.

64470893 is a deficient number, since it is larger than the sum of its proper divisors (1735507).

64470893 is an frugal number, since it uses more digits than its factorization.

64470893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 64470893 is about 8029.3768749511. The cubic root of 64470893 is about 400.9786308349.

The spelling of 64470893 in words is "sixty-four million, four hundred seventy thousand, eight hundred ninety-three".