700878961 has 4 divisors (see below), whose sum is σ = 701269924. Its totient is φ = 700488000.

The previous prime is 700878949. The next prime is 700878967. The reversal of 700878961 is 169878007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 169878007 = 13 ⋅13067539.

It can be written as a sum of positive squares in 2 ways, for example, as 401761936 + 299117025 = 20044^2 + 17295^2 .

It is a cyclic number.

It is not a de Polignac number, because 700878961 - 2²³ = 692490353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (700878967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192780 + ... + 196381.

It is an arithmetic number, because the mean of its divisors is an integer number (175317481).

Almost surely, 2^700878961 is an apocalyptic number.

It is an amenable number.

700878961 is a deficient number, since it is larger than the sum of its proper divisors (390963).

700878961 is a wasteful number, since it uses less digits than its factorization.

700878961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390962.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 700878961 is about 26474.1187011013. The cubic root of 700878961 is about 888.2754810590.

The spelling of 700878961 in words is "seven hundred million, eight hundred seventy-eight thousand, nine hundred sixty-one".