766958440 has 32 divisors (see below), whose sum is σ = 1749302280. Its totient is φ = 302579712.

The previous prime is 766958419. The next prime is 766958453. The reversal of 766958440 is 44859667.

It can be written as a sum of positive squares in 4 ways, for example, as 703628676 + 63329764 = 26526^2 + 7958^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128409 + ... + 134248.

Almost surely, 2^766958440 is an apocalyptic number.

It is an amenable number.

766958440 is an abundant number, since it is smaller than the sum of its proper divisors (982343840).

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

766958440 is a wasteful number, since it uses less digits than its factorization.

766958440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262741 (or 262737 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 766958440 is about 27694.0145157758. The cubic root of 766958440 is about 915.3572176656.

The spelling of 766958440 in words is "seven hundred sixty-six million, nine hundred fifty-eight thousand, four hundred forty".