770749137 has 24 divisors (see below), whose sum is σ = 1131273000. Its totient is φ = 505605888.

The previous prime is 770749129. The next prime is 770749139. The reversal of 770749137 is 731947077.

It can be written as a sum of positive squares in 4 ways, for example, as 55935441 + 714813696 = 7479^2 + 26736^2 .

It is not a de Polignac number, because 770749137 - 2³ = 770749129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 770749092 and 770749101.

It is not an unprimeable number, because it can be changed into a prime (770749139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143533 + ... + 148805.

It is an arithmetic number, because the mean of its divisors is an integer number (47136375).

Almost surely, 2^770749137 is an apocalyptic number.

It is an amenable number.

770749137 is a deficient number, since it is larger than the sum of its proper divisors (360523863).

770749137 is a wasteful number, since it uses less digits than its factorization.

770749137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537 (or 5534 counting only the distinct ones).

The product of its (nonzero) digits is 259308, while the sum is 45.

The square root of 770749137 is about 27762.3690811861. The cubic root of 770749137 is about 916.8627929143.

The spelling of 770749137 in words is "seven hundred seventy million, seven hundred forty-nine thousand, one hundred thirty-seven".