977875867 has 4 divisors (see below), whose sum is σ = 977944720. Its totient is φ = 977807016.

The previous prime is 977875837. The next prime is 977875883. The reversal of 977875867 is 768578779.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 977875867 - 2¹⁵ = 977843099 is a prime.

It is a super-2 number, since 2×977875867² = 1912482422522003378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 977875799 and 977875808.

It is not an unprimeable number, because it can be changed into a prime (977875837) 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, 4383 + ... + 44440.

It is an arithmetic number, because the mean of its divisors is an integer number (244486180).

Almost surely, 2^977875867 is an apocalyptic number.

977875867 is a deficient number, since it is larger than the sum of its proper divisors (68853).

977875867 is a wasteful number, since it uses less digits than its factorization.

977875867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68852.

The product of its digits is 41489280, while the sum is 64.

The square root of 977875867 is about 31271.0068114220. The cubic root of 977875867 is about 992.5702241425.

The spelling of 977875867 in words is "nine hundred seventy-seven million, eight hundred seventy-five thousand, eight hundred sixty-seven".