65158380 has 72 divisors (see below), whose sum is σ = 225886752. Its totient is φ = 14893056.

The previous prime is 65158367. The next prime is 65158381. The reversal of 65158380 is 8385156.

It is a super-2 number, since 2×65158380² = 8491228968448800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (65158381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24597 + ... + 27116.

It is an arithmetic number, because the mean of its divisors is an integer number (3137316).

Almost surely, 2^65158380 is an apocalyptic number.

65158380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65158380 is an abundant number, since it is smaller than the sum of its proper divisors (160728372).

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

65158380 is a wasteful number, since it uses less digits than its factorization.

65158380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51735 (or 51730 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 65158380 is about 8072.0740829108. The cubic root of 65158380 is about 402.3988763873.

The spelling of 65158380 in words is "sixty-five million, one hundred fifty-eight thousand, three hundred eighty".