64974425 has 36 divisors (see below), whose sum is σ = 89486460. Its totient is φ = 46794880.

The previous prime is 64974409. The next prime is 64974439. The reversal of 64974425 is 52447946.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 541696 + 64432729 = 736^2 + 8027^2 .

It is not a de Polignac number, because 64974425 - 2⁴ = 64974409 is a prime.

Its product of digits (241920) is a multiple of the sum of its prime divisors (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2824964 + ... + 2824986.

It is an arithmetic number, because the mean of its divisors is an integer number (2485735).

Almost surely, 2^64974425 is an apocalyptic number.

It is an amenable number.

64974425 is a deficient number, since it is larger than the sum of its proper divisors (24512035).

64974425 is an equidigital number, since it uses as much as digits as its factorization.

64974425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 45 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 64974425 is about 8060.6714980825. The cubic root of 64974425 is about 402.0198355765.

The spelling of 64974425 in words is "sixty-four million, nine hundred seventy-four thousand, four hundred twenty-five".