65137653 has 24 divisors (see below), whose sum is σ = 108833088. Its totient is φ = 36770112.

The previous prime is 65137619. The next prime is 65137663. The reversal of 65137653 is 35673156.

It is a happy number.

It is not a de Polignac number, because 65137653 - 2¹³ = 65129461 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65137663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1000 + ... + 11457.

It is an arithmetic number, because the mean of its divisors is an integer number (4534712).

Almost surely, 2^65137653 is an apocalyptic number.

65137653 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

65137653 is a deficient number, since it is larger than the sum of its proper divisors (43695435).

65137653 is a wasteful number, since it uses less digits than its factorization.

65137653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12553 (or 12550 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 65137653 is about 8070.7901100202. The cubic root of 65137653 is about 402.3562039224.

The spelling of 65137653 in words is "sixty-five million, one hundred thirty-seven thousand, six hundred fifty-three".