766858740 has 48 divisors (see below), whose sum is σ = 2150463168. Its totient is φ = 204185344.

The previous prime is 766858739. The next prime is 766858759. The reversal of 766858740 is 47858667.

It is a super-2 number, since 2×766858740² = 1176144654228775200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31624 + ... + 50336.

It is an arithmetic number, because the mean of its divisors is an integer number (44801316).

Almost surely, 2^766858740 is an apocalyptic number.

It is an amenable number.

766858740 is an abundant number, since it is smaller than the sum of its proper divisors (1383604428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

766858740 is a wasteful number, since it uses less digits than its factorization.

766858740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19408 (or 19406 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 51.

The square root of 766858740 is about 27692.2144293301. The cubic root of 766858740 is about 915.3175522962.

The spelling of 766858740 in words is "seven hundred sixty-six million, eight hundred fifty-eight thousand, seven hundred forty".