65490939 has 6 divisors (see below), whose sum is σ = 94598036. Its totient is φ = 43660620.

The previous prime is 65490937. The next prime is 65490973. The reversal of 65490939 is 93909456.

It is a happy number.

It is not a de Polignac number, because 65490939 - 2¹ = 65490937 is a prime.

It is a super-2 number, since 2×65490939² = 8578126182203442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65490894 and 65490903.

It is not an unprimeable number, because it can be changed into a prime (65490937) 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, 3638377 + ... + 3638394.

Almost surely, 2^65490939 is an apocalyptic number.

65490939 is a deficient number, since it is larger than the sum of its proper divisors (29107097).

65490939 is a wasteful number, since it uses less digits than its factorization.

65490939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7276777 (or 7276774 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 65490939 is about 8092.6472183087. The cubic root of 65490939 is about 403.0823103163.

It can be divided in two parts, 6 and 5490939, that added together give a palindrome (5490945).

The spelling of 65490939 in words is "sixty-five million, four hundred ninety thousand, nine hundred thirty-nine".