64308490 has 8 divisors (see below), whose sum is σ = 115755300. Its totient is φ = 25723392.

The previous prime is 64308487. The next prime is 64308493. The reversal of 64308490 is 9480346.

It is an interprime number because it is at equal distance from previous prime (64308487) and next prime (64308493).

It can be written as a sum of positive squares in 2 ways, for example, as 58874929 + 5433561 = 7673^2 + 2331^2 .

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

It is not an unprimeable number, because it can be changed into a prime (64308493) 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, 3215415 + ... + 3215434.

Almost surely, 2^64308490 is an apocalyptic number.

64308490 is a deficient number, since it is larger than the sum of its proper divisors (51446810).

64308490 is a wasteful number, since it uses less digits than its factorization.

64308490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430856.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 64308490 is about 8019.2574469211. The cubic root of 64308490 is about 400.6416576383.

The spelling of 64308490 in words is "sixty-four million, three hundred eight thousand, four hundred ninety".