65137651 has 4 divisors (see below), whose sum is σ = 65235112. Its totient is φ = 65040192.

The previous prime is 65137619. The next prime is 65137663. The reversal of 65137651 is 15673156.

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

It is a cyclic number.

It is not a de Polignac number, because 65137651 - 2⁵ = 65137619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65137951) 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, 47721 + ... + 49066.

It is an arithmetic number, because the mean of its divisors is an integer number (16308778).

Almost surely, 2^65137651 is an apocalyptic number.

65137651 is a deficient number, since it is larger than the sum of its proper divisors (97461).

65137651 is an equidigital number, since it uses as much as digits as its factorization.

65137651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97460.

The product of its digits is 18900, while the sum is 34.

The square root of 65137651 is about 8070.7899861166. The cubic root of 65137651 is about 402.3561998044.

The spelling of 65137651 in words is "sixty-five million, one hundred thirty-seven thousand, six hundred fifty-one".