771874380 has 48 divisors (see below), whose sum is σ = 2401388640. Its totient is φ = 205833024.

The previous prime is 771874379. The next prime is 771874391. The reversal of 771874380 is 83478177.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 714159 + ... + 715238.

It is an arithmetic number, because the mean of its divisors is an integer number (50028930).

Almost surely, 2^771874380 is an apocalyptic number.

It is an amenable number.

771874380 is an abundant number, since it is smaller than the sum of its proper divisors (1629514260).

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

771874380 is a wasteful number, since it uses less digits than its factorization.

771874380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429415 (or 1429407 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The square root of 771874380 is about 27782.6273055663. The cubic root of 771874380 is about 917.3087623956.

The spelling of 771874380 in words is "seven hundred seventy-one million, eight hundred seventy-four thousand, three hundred eighty".