769640017 has 4 divisors (see below), whose sum is σ = 769744036. Its totient is φ = 769536000.

The previous prime is 769639957. The next prime is 769640033. The reversal of 769640017 is 710046967.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 254849296 + 514790721 = 15964^2 + 22689^2 .

It is a cyclic number.

It is not a de Polignac number, because 769640017 - 2²³ = 761251409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (769640057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39984 + ... + 56017.

It is an arithmetic number, because the mean of its divisors is an integer number (192436009).

Almost surely, 2^769640017 is an apocalyptic number.

It is an amenable number.

769640017 is a deficient number, since it is larger than the sum of its proper divisors (104019).

769640017 is an equidigital number, since it uses as much as digits as its factorization.

769640017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104018.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 769640017 is about 27742.3866493134. The cubic root of 769640017 is about 916.4227885143.

The spelling of 769640017 in words is "seven hundred sixty-nine million, six hundred forty thousand, seventeen".