770256631 has 4 divisors (see below), whose sum is σ = 774247792. Its totient is φ = 766265472.

The previous prime is 770256629. The next prime is 770256649. The reversal of 770256631 is 136652077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136652077 = 47 ⋅2907491.

It is a cyclic number.

It is not a de Polignac number, because 770256631 - 2¹ = 770256629 is a prime.

It is a super-2 number, since 2×770256631² = 1186590555198940322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770256671) 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, 1995291 + ... + 1995676.

It is an arithmetic number, because the mean of its divisors is an integer number (193561948).

Almost surely, 2^770256631 is an apocalyptic number.

770256631 is a deficient number, since it is larger than the sum of its proper divisors (3991161).

770256631 is a wasteful number, since it uses less digits than its factorization.

770256631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991160.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 770256631 is about 27753.4976354333. The cubic root of 770256631 is about 916.6674605980.

The spelling of 770256631 in words is "seven hundred seventy million, two hundred fifty-six thousand, six hundred thirty-one".