30639065 has 8 divisors (see below), whose sum is σ = 37549440. Its totient is φ = 23989552.

The previous prime is 30639047. The next prime is 30639073. The reversal of 30639065 is 56093603.

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

It is a de Polignac number, because none of the positive numbers 2^k-30639065 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64955 + ... + 65424.

It is an arithmetic number, because the mean of its divisors is an integer number (4693680).

Almost surely, 2^30639065 is an apocalyptic number.

It is an amenable number.

30639065 is a deficient number, since it is larger than the sum of its proper divisors (6910375).

30639065 is a wasteful number, since it uses less digits than its factorization.

30639065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130431.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 30639065 is about 5535.2565432869. The cubic root of 30639065 is about 312.9141261561.

The spelling of 30639065 in words is "thirty million, six hundred thirty-nine thousand, sixty-five".