770395491 has 6 divisors (see below), whose sum is σ = 1112793500. Its totient is φ = 513596988.

The previous prime is 770395421. The next prime is 770395523. The reversal of 770395491 is 194593077.

770395491 is a `hidden beast` number, since 7 + 70 + 3 + 95 + 491 = 666.

It is not a de Polignac number, because 770395491 - 2⁷ = 770395363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (770395421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42799741 + ... + 42799758.

Almost surely, 2^770395491 is an apocalyptic number.

770395491 is a deficient number, since it is larger than the sum of its proper divisors (342398009).

770395491 is a wasteful number, since it uses less digits than its factorization.

770395491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85599505 (or 85599502 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 770395491 is about 27755.9991893644. Note that the first 3 decimals coincide. The cubic root of 770395491 is about 916.7225421514.

Adding to 770395491 its sum of digits (45), we get a square (770395536 = 27756²).

The spelling of 770395491 in words is "seven hundred seventy million, three hundred ninety-five thousand, four hundred ninety-one".