870032649 has 4 divisors (see below), whose sum is σ = 1160043536. Its totient is φ = 580021764.

The previous prime is 870032633. The next prime is 870032687. The reversal of 870032649 is 946230078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 870032649 - 2⁴ = 870032633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870036649) 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, 145005439 + ... + 145005444.

It is an arithmetic number, because the mean of its divisors is an integer number (290010884).

Almost surely, 2^870032649 is an apocalyptic number.

It is an amenable number.

870032649 is a deficient number, since it is larger than the sum of its proper divisors (290010887).

870032649 is a wasteful number, since it uses less digits than its factorization.

870032649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290010886.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 870032649 is about 29496.3158546962. The cubic root of 870032649 is about 954.6522125683.

The spelling of 870032649 in words is "eight hundred seventy million, thirty-two thousand, six hundred forty-nine".