770257 has 4 divisors (see below), whose sum is σ = 795136. Its totient is φ = 745380.

The previous prime is 770239. The next prime is 770261. The reversal of 770257 is 752077.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 770257 - 2⁷ = 770129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (770207) 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, 12393 + ... + 12454.

It is an arithmetic number, because the mean of its divisors is an integer number (198784).

2⁷⁷⁰²⁵⁷ is an apocalyptic number.

It is an amenable number.

770257 is a deficient number, since it is larger than the sum of its proper divisors (24879).

770257 is a wasteful number, since it uses less digits than its factorization.

770257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24878.

The product of its (nonzero) digits is 3430, while the sum is 28.

The square root of 770257 is about 877.6428658629. The cubic root of 770257 is about 91.6667606978. Note that the first 3 decimals are identical.

The spelling of 770257 in words is "seven hundred seventy thousand, two hundred fifty-seven".