992561965 has 8 divisors (see below), whose sum is σ = 1191916440. Its totient is φ = 793488192.

The previous prime is 992561953. The next prime is 992561971. The reversal of 992561965 is 569165299.

It can be written as a sum of positive squares in 4 ways, for example, as 57486724 + 935075241 = 7582^2 + 30579^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 992561965 - 2¹⁷ = 992430893 is a prime.

It is a super-2 number, since 2×992561965² = 1970358508729322450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62314 + ... + 76603.

It is an arithmetic number, because the mean of its divisors is an integer number (148989555).

Almost surely, 2^992561965 is an apocalyptic number.

It is an amenable number.

992561965 is a deficient number, since it is larger than the sum of its proper divisors (199354475).

992561965 is a wasteful number, since it uses less digits than its factorization.

992561965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140351.

The product of its digits is 1312200, while the sum is 52.

The square root of 992561965 is about 31504.9514362425. The cubic root of 992561965 is about 997.5144823202.

The spelling of 992561965 in words is "nine hundred ninety-two million, five hundred sixty-one thousand, nine hundred sixty-five".