65257039 has 4 divisors (see below), whose sum is σ = 68691640. Its totient is φ = 61822440.

The previous prime is 65257037. The next prime is 65257051. The reversal of 65257039 is 93075256.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65257039 - 2¹ = 65257037 is a prime.

It is a super-2 number, since 2×65257039² = 8516962278095042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65256989 and 65257007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65257037) 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, 1717272 + ... + 1717309.

It is an arithmetic number, because the mean of its divisors is an integer number (17172910).

Almost surely, 2^65257039 is an apocalyptic number.

65257039 is a deficient number, since it is larger than the sum of its proper divisors (3434601).

65257039 is a wasteful number, since it uses less digits than its factorization.

65257039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3434600.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 65257039 is about 8078.1829021136. The cubic root of 65257039 is about 402.6018702325.

The spelling of 65257039 in words is "sixty-five million, two hundred fifty-seven thousand, thirty-nine".