64602897241 has 9 divisors (see below), whose sum is σ = 64862938911. Its totient is φ = 64343896992.

The previous prime is 64602897239. The next prime is 64602897257. The reversal of 64602897241 is 14279820646.

The square root of 64602897241 is 254171.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7244563225 + 57358334016 = 85115^2 + 239496^2 .

It is not a de Polignac number, because 64602897241 - 2¹ = 64602897239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64602897211) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 110055750 + ... + 110056336.

Almost surely, 2^64602897241 is an apocalyptic number.

64602897241 is the 254171-st square number.

64602897241 is the 127086-th centered octagonal number.

It is an amenable number.

64602897241 is a deficient number, since it is larger than the sum of its proper divisors (260041670).

64602897241 is an frugal number, since it uses more digits than its factorization.

64602897241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

Multiplying 64602897241 by its sum of digits (49), we get a square (3165541964809 = 1779197²).

The spelling of 64602897241 in words is "sixty-four billion, six hundred two million, eight hundred ninety-seven thousand, two hundred forty-one".