65722137 has 16 divisors (see below), whose sum is σ = 95292288. Its totient is φ = 40049280.

The previous prime is 65722133. The next prime is 65722141. The reversal of 65722137 is 73122756.

It is an interprime number because it is at equal distance from previous prime (65722133) and next prime (65722141).

It is not a de Polignac number, because 65722137 - 2² = 65722133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65722098 and 65722107.

It is not an unprimeable number, because it can be changed into a prime (65722133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4164 + ... + 12197.

It is an arithmetic number, because the mean of its divisors is an integer number (5955768).

Almost surely, 2^65722137 is an apocalyptic number.

It is an amenable number.

65722137 is a deficient number, since it is larger than the sum of its proper divisors (29570151).

65722137 is a wasteful number, since it uses less digits than its factorization.

65722137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16480.

The product of its digits is 17640, while the sum is 33.

The square root of 65722137 is about 8106.9190818707. The cubic root of 65722137 is about 403.5560775130.

The spelling of 65722137 in words is "sixty-five million, seven hundred twenty-two thousand, one hundred thirty-seven".