64298261 has 4 divisors (see below), whose sum is σ = 67682400. Its totient is φ = 60914124.

The previous prime is 64298237. The next prime is 64298279. The reversal of 64298261 is 16289246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64298261 - 2⁶ = 64298197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64298231) 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, 1692041 + ... + 1692078.

It is an arithmetic number, because the mean of its divisors is an integer number (16920600).

Almost surely, 2^64298261 is an apocalyptic number.

It is an amenable number.

64298261 is a deficient number, since it is larger than the sum of its proper divisors (3384139).

64298261 is a wasteful number, since it uses less digits than its factorization.

64298261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384138.

The product of its digits is 41472, while the sum is 38.

The square root of 64298261 is about 8018.6196443029. The cubic root of 64298261 is about 400.6204143011.

The spelling of 64298261 in words is "sixty-four million, two hundred ninety-eight thousand, two hundred sixty-one".