761978806 has 16 divisors (see below), whose sum is σ = 1161465840. Its totient is φ = 374837760.

The previous prime is 761978801. The next prime is 761978807. The reversal of 761978806 is 608879167.

It is a super-2 number, since 2×761978806² = 1161223401586371272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761978801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121426 + ... + 127546.

It is an arithmetic number, because the mean of its divisors is an integer number (72591615).

Almost surely, 2^761978806 is an apocalyptic number.

761978806 is a deficient number, since it is larger than the sum of its proper divisors (399487034).

761978806 is a wasteful number, since it uses less digits than its factorization.

761978806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7119.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 761978806 is about 27603.9635922090. The cubic root of 761978806 is about 913.3718669104.

The spelling of 761978806 in words is "seven hundred sixty-one million, nine hundred seventy-eight thousand, eight hundred six".