870807621 has 8 divisors (see below), whose sum is σ = 1201114080. Its totient is φ = 560519792.

The previous prime is 870807611. The next prime is 870807647. The reversal of 870807621 is 126708078.

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

It is a cyclic number.

It is not a de Polignac number, because 870807621 - 2⁵ = 870807589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 870807621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870807611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5004555 + ... + 5004728.

It is an arithmetic number, because the mean of its divisors is an integer number (150139260).

Almost surely, 2^870807621 is an apocalyptic number.

It is an amenable number.

870807621 is a deficient number, since it is larger than the sum of its proper divisors (330306459).

870807621 is a wasteful number, since it uses less digits than its factorization.

870807621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009315.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 870807621 is about 29509.4496898875. The cubic root of 870807621 is about 954.9355770984.

The spelling of 870807621 in words is "eight hundred seventy million, eight hundred seven thousand, six hundred twenty-one".