65613390 has 16 divisors (see below), whose sum is σ = 157472208. Its totient is φ = 17496896.

The previous prime is 65613389. The next prime is 65613413. The reversal of 65613390 is 9331656.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093527 + ... + 1093586.

It is an arithmetic number, because the mean of its divisors is an integer number (9842013).

Almost surely, 2^65613390 is an apocalyptic number.

65613390 is an abundant number, since it is smaller than the sum of its proper divisors (91858818).

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

65613390 is a wasteful number, since it uses less digits than its factorization.

65613390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187123.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 65613390 is about 8100.2092565563. The cubic root of 65613390 is about 403.3333735552. Note that the first 4 decimals are identical.

The spelling of 65613390 in words is "sixty-five million, six hundred thirteen thousand, three hundred ninety".