65607381 has 16 divisors (see below), whose sum is σ = 111081600. Its totient is φ = 37489824.

The previous prime is 65607349. The next prime is 65607383. The reversal of 65607381 is 18370656.

It is not a de Polignac number, because 65607381 - 2⁵ = 65607349 is a prime.

It is a super-2 number, since 2×65607381² = 8608656883358322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65607383) 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, 173376 + ... + 173753.

It is an arithmetic number, because the mean of its divisors is an integer number (6942600).

Almost surely, 2^65607381 is an apocalyptic number.

It is an amenable number.

65607381 is a deficient number, since it is larger than the sum of its proper divisors (45474219).

65607381 is a wasteful number, since it uses less digits than its factorization.

65607381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347145 (or 347139 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 65607381 is about 8099.8383317200. The cubic root of 65607381 is about 403.3210604982.

The spelling of 65607381 in words is "sixty-five million, six hundred seven thousand, three hundred eighty-one".