65918901 has 4 divisors (see below), whose sum is σ = 87891872. Its totient is φ = 43945932.

The previous prime is 65918893. The next prime is 65918903. The reversal of 65918901 is 10981956.

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 not a de Polignac number, because 65918901 - 2³ = 65918893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65918901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65918903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10986481 + ... + 10986486.

It is an arithmetic number, because the mean of its divisors is an integer number (21972968).

Almost surely, 2^65918901 is an apocalyptic number.

It is an amenable number.

65918901 is a deficient number, since it is larger than the sum of its proper divisors (21972971).

65918901 is a wasteful number, since it uses less digits than its factorization.

65918901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21972970.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 65918901 is about 8119.0455719869. The cubic root of 65918901 is about 403.9584087008.

The spelling of 65918901 in words is "sixty-five million, nine hundred eighteen thousand, nine hundred one".