770943640 has 16 divisors (see below), whose sum is σ = 1734623280. Its totient is φ = 308377440.

The previous prime is 770943611. The next prime is 770943661. The reversal of 770943640 is 46349077.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 19273591 = 770943640 / (7 + 7 + 0 + 9 + 4 + 3 + 6 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 770943593 and 770943602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9636756 + ... + 9636835.

It is an arithmetic number, because the mean of its divisors is an integer number (108413955).

Almost surely, 2^770943640 is an apocalyptic number.

It is an amenable number.

770943640 is an abundant number, since it is smaller than the sum of its proper divisors (963679640).

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

770943640 is a wasteful number, since it uses less digits than its factorization.

770943640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19273602 (or 19273598 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 770943640 is about 27765.8718573720. The cubic root of 770943640 is about 916.9399116361.

The spelling of 770943640 in words is "seven hundred seventy million, nine hundred forty-three thousand, six hundred forty".