870646623 has 32 divisors (see below), whose sum is σ = 1510244352. Its totient is φ = 432616800.

The previous prime is 870646607. The next prime is 870646639. The reversal of 870646623 is 326646078.

It is an interprime number because it is at equal distance from previous prime (870646607) and next prime (870646639).

It is not a de Polignac number, because 870646623 - 2⁴ = 870646607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870646643) 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 31 ways as a sum of consecutive naturals, for example, 76623 + ... + 87248.

It is an arithmetic number, because the mean of its divisors is an integer number (47195136).

Almost surely, 2^870646623 is an apocalyptic number.

870646623 is a deficient number, since it is larger than the sum of its proper divisors (639597729).

870646623 is a wasteful number, since it uses less digits than its factorization.

870646623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163915.

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 870646623 is about 29506.7216579545. The cubic root of 870646623 is about 954.8767228463.

The spelling of 870646623 in words is "eight hundred seventy million, six hundred forty-six thousand, six hundred twenty-three".