770446440 has 48 divisors (see below), whose sum is σ = 2503952100. Its totient is φ = 205452288.

The previous prime is 770446429. The next prime is 770446499. The reversal of 770446440 is 44644077.

770446440 is a `hidden beast` number, since 7 + 7 + 0 + 4 + 4 + 644 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 734518404 + 35928036 = 27102^2 + 5994^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 770446395 and 770446404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1069705 + ... + 1070424.

Almost surely, 2^770446440 is an apocalyptic number.

It is an amenable number.

770446440 is an abundant number, since it is smaller than the sum of its proper divisors (1733505660).

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

770446440 is a wasteful number, since it uses less digits than its factorization.

770446440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140146 (or 2140139 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 36.

The square root of 770446440 is about 27756.9169757738. The cubic root of 770446440 is about 916.7427504158.

The spelling of 770446440 in words is "seven hundred seventy million, four hundred forty-six thousand, four hundred forty".