65979941 has 4 divisors (see below), whose sum is σ = 69861132. Its totient is φ = 62098752.

The previous prime is 65979899. The next prime is 65979971. The reversal of 65979941 is 14997956.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43692100 + 22287841 = 6610^2 + 4721^2 .

It is a cyclic number.

It is not a de Polignac number, because 65979941 - 2¹⁰ = 65978917 is a prime.

It is a super-2 number, since 2×65979941² = 8706705228726962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65979941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65979971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940570 + ... + 1940603.

It is an arithmetic number, because the mean of its divisors is an integer number (17465283).

Almost surely, 2^65979941 is an apocalyptic number.

It is an amenable number.

65979941 is a deficient number, since it is larger than the sum of its proper divisors (3881191).

65979941 is a wasteful number, since it uses less digits than its factorization.

65979941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881190.

The product of its digits is 612360, while the sum is 50.

The square root of 65979941 is about 8122.8037647108. The cubic root of 65979941 is about 404.0830568868.

The spelling of 65979941 in words is "sixty-five million, nine hundred seventy-nine thousand, nine hundred forty-one".