770504987 has 4 divisors (see below), whose sum is σ = 880577136. Its totient is φ = 660432840.

The previous prime is 770504921. The next prime is 770504989. The reversal of 770504987 is 789405077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789405077 = 379 ⋅2082863.

It is a cyclic number.

It is not a de Polignac number, because 770504987 - 2⁸ = 770504731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (770504989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55036064 + ... + 55036077.

It is an arithmetic number, because the mean of its divisors is an integer number (220144284).

Almost surely, 2^770504987 is an apocalyptic number.

770504987 is a deficient number, since it is larger than the sum of its proper divisors (110072149).

770504987 is a wasteful number, since it uses less digits than its factorization.

770504987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110072148.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 770504987 is about 27757.9715937602. The cubic root of 770504987 is about 916.7659712289.

The spelling of 770504987 in words is "seven hundred seventy million, five hundred four thousand, nine hundred eighty-seven".