609712965 has 24 divisors (see below), whose sum is σ = 1093280760. Its totient is φ = 313966464.

The previous prime is 609712933. The next prime is 609712969. The reversal of 609712965 is 569217906.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 104407524 + 505305441 = 10218^2 + 22479^2 .

It is not a de Polignac number, because 609712965 - 2⁵ = 609712933 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 609712965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609712969) 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, 232302 + ... + 234911.

It is an arithmetic number, because the mean of its divisors is an integer number (45553365).

Almost surely, 2^609712965 is an apocalyptic number.

It is an amenable number.

609712965 is a deficient number, since it is larger than the sum of its proper divisors (483567795).

609712965 is a wasteful number, since it uses less digits than its factorization.

609712965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467253 (or 467250 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 609712965 is about 24692.3665329996. The cubic root of 609712965 is about 847.9595648847.

It can be divided in two parts, 60971 and 2965, that added together give a palindrome (63936).

The spelling of 609712965 in words is "six hundred nine million, seven hundred twelve thousand, nine hundred sixty-five".