65137290 has 16 divisors (see below), whose sum is σ = 156329568. Its totient is φ = 17369936.

The previous prime is 65137283. The next prime is 65137291. The reversal of 65137290 is 9273156.

It is not an unprimeable number, because it can be changed into a prime (65137291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1085592 + ... + 1085651.

It is an arithmetic number, because the mean of its divisors is an integer number (9770598).

Almost surely, 2^65137290 is an apocalyptic number.

65137290 is an abundant number, since it is smaller than the sum of its proper divisors (91192278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65137290 is a wasteful number, since it uses less digits than its factorization.

65137290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171253.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 65137290 is about 8070.7676214843. The cubic root of 65137290 is about 402.3554565023.

The spelling of 65137290 in words is "sixty-five million, one hundred thirty-seven thousand, two hundred ninety".