65537997 has 8 divisors (see below), whose sum is σ = 99867456. Its totient is φ = 37450272.

The previous prime is 65537987. The next prime is 65538019. The reversal of 65537997 is 79973556.

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

It is not a de Polignac number, because 65537997 - 2¹¹ = 65535949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65537917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1560408 + ... + 1560449.

It is an arithmetic number, because the mean of its divisors is an integer number (12483432).

Almost surely, 2^65537997 is an apocalyptic number.

It is an amenable number.

65537997 is a deficient number, since it is larger than the sum of its proper divisors (34329459).

65537997 is a wasteful number, since it uses less digits than its factorization.

65537997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120867.

The product of its digits is 1786050, while the sum is 51.

The square root of 65537997 is about 8095.5541502729. The cubic root of 65537997 is about 403.1788310783.

The spelling of 65537997 in words is "sixty-five million, five hundred thirty-seven thousand, nine hundred ninety-seven".