790776649 has 8 divisors (see below), whose sum is σ = 862386560. Its totient is φ = 720706896.

The previous prime is 790776647. The next prime is 790776667. The reversal of 790776649 is 946677097.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 790776649 - 2¹ = 790776647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 790776649.

It is not an unprimeable number, because it can be changed into a prime (790776643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383967 + ... + 386020.

It is an arithmetic number, because the mean of its divisors is an integer number (107798320).

Almost surely, 2^790776649 is an apocalyptic number.

790776649 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

790776649 is a deficient number, since it is larger than the sum of its proper divisors (71609911).

790776649 is a wasteful number, since it uses less digits than its factorization.

790776649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770079.

The product of its (nonzero) digits is 4000752, while the sum is 55.

The square root of 790776649 is about 28120.7512168505. The cubic root of 790776649 is about 924.7363841926.

The spelling of 790776649 in words is "seven hundred ninety million, seven hundred seventy-six thousand, six hundred forty-nine".