770691 has 8 divisors (see below), whose sum is σ = 1060864. Its totient is φ = 497160.

The previous prime is 770669. The next prime is 770741. The reversal of 770691 is 196077.

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

It is not a de Polignac number, because 770691 - 2⁹ = 770179 is a prime.

It is a Duffinian number.

770691 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 770691.

It is not an unprimeable number, because it can be changed into a prime (770611) 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, 4051 + ... + 4236.

It is an arithmetic number, because the mean of its divisors is an integer number (132608).

2⁷⁷⁰⁶⁹¹ is an apocalyptic number.

770691 is a deficient number, since it is larger than the sum of its proper divisors (290173).

770691 is a wasteful number, since it uses less digits than its factorization.

770691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 770691 is about 877.8900842361. The cubic root of 770691 is about 91.6839739589.

Subtracting from 770691 its sum of digits (30), we obtain a triangular number (770661 = T₁₂₄₁).

The spelling of 770691 in words is "seven hundred seventy thousand, six hundred ninety-one".