65615701 has 2 divisors, whose sum is σ = 65615702. Its totient is φ = 65615700.

The previous prime is 65615677. The next prime is 65615707. The reversal of 65615701 is 10751656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64416676 + 1199025 = 8026^2 + 1095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65615701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65615707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32807850 + 32807851.

It is an arithmetic number, because the mean of its divisors is an integer number (32807851).

Almost surely, 2^65615701 is an apocalyptic number.

It is an amenable number.

65615701 is a deficient number, since it is larger than the sum of its proper divisors (1).

65615701 is an equidigital number, since it uses as much as digits as its factorization.

65615701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 65615701 is about 8100.3519059359. The cubic root of 65615701 is about 403.3381088310.

The spelling of 65615701 in words is "sixty-five million, six hundred fifteen thousand, seven hundred one".