120646887 has 32 divisors (see below), whose sum is σ = 169827840. Its totient is φ = 76116480.

The previous prime is 120646879. The next prime is 120646901. The reversal of 120646887 is 788646021.

It is not a de Polignac number, because 120646887 - 2³ = 120646879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120646987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1127488 + ... + 1127594.

It is an arithmetic number, because the mean of its divisors is an integer number (5307120).

Almost surely, 2^120646887 is an apocalyptic number.

120646887 is a deficient number, since it is larger than the sum of its proper divisors (49180953).

120646887 is a wasteful number, since it uses less digits than its factorization.

120646887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 120646887 is about 10983.9376819062. The cubic root of 120646887 is about 494.1271384040.

The spelling of 120646887 in words is "one hundred twenty million, six hundred forty-six thousand, eight hundred eighty-seven".