65370381 has 4 divisors (see below), whose sum is σ = 87160512. Its totient is φ = 43580252.

The previous prime is 65370377. The next prime is 65370397. The reversal of 65370381 is 18307356.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 65370381 - 2² = 65370377 is a prime.

It is a super-2 number, since 2×65370381² = 8546573424170322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65370311) 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, 10895061 + ... + 10895066.

It is an arithmetic number, because the mean of its divisors is an integer number (21790128).

Almost surely, 2^65370381 is an apocalyptic number.

It is an amenable number.

65370381 is a deficient number, since it is larger than the sum of its proper divisors (21790131).

65370381 is a wasteful number, since it uses less digits than its factorization.

65370381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21790130.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 65370381 is about 8085.1951738965. The cubic root of 65370381 is about 402.8348224105.

The spelling of 65370381 in words is "sixty-five million, three hundred seventy thousand, three hundred eighty-one".