65244590 has 32 divisors (see below), whose sum is σ = 120372480. Its totient is φ = 25452544.

The previous prime is 65244581. The next prime is 65244593. The reversal of 65244590 is 9544256.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 65244590.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65244593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135971 + ... + 136449.

It is an arithmetic number, because the mean of its divisors is an integer number (3761640).

Almost surely, 2^65244590 is an apocalyptic number.

65244590 is a deficient number, since it is larger than the sum of its proper divisors (55127890).

65244590 is a wasteful number, since it uses less digits than its factorization.

65244590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 65244590 is about 8077.4123331671. The cubic root of 65244590 is about 402.5762673269.

The spelling of 65244590 in words is "sixty-five million, two hundred forty-four thousand, five hundred ninety".