770136489 has 6 divisors (see below), whose sum is σ = 1112419386. Its totient is φ = 513424320.

The previous prime is 770136487. The next prime is 770136511. The reversal of 770136489 is 984631077.

It can be written as a sum of positive squares in only one way, i.e., 768232089 + 1904400 = 27717^2 + 1380^2 .

It is not a de Polignac number, because 770136489 - 2¹ = 770136487 is a prime.

It is a super-2 number, since 2×770136489² = 1186220423378494242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (770136487) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42785352 + ... + 42785369.

It is an arithmetic number, because the mean of its divisors is an integer number (185403231).

Almost surely, 2^770136489 is an apocalyptic number.

It is an amenable number.

770136489 is a deficient number, since it is larger than the sum of its proper divisors (342282897).

770136489 is a wasteful number, since it uses less digits than its factorization.

770136489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85570727 (or 85570724 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 770136489 is about 27751.3331031142. Note that the first 3 decimals coincide. The cubic root of 770136489 is about 916.6197985661.

The spelling of 770136489 in words is "seven hundred seventy million, one hundred thirty-six thousand, four hundred eighty-nine".