65992380 has 48 divisors (see below), whose sum is σ = 185740800. Its totient is φ = 17506368.

The previous prime is 65992379. The next prime is 65992393. The reversal of 65992380 is 8329956.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9177 + ... + 14703.

It is an arithmetic number, because the mean of its divisors is an integer number (3869600).

Almost surely, 2^65992380 is an apocalyptic number.

65992380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65992380 is an abundant number, since it is smaller than the sum of its proper divisors (119748420).

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

65992380 is a wasteful number, since it uses less digits than its factorization.

65992380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738 (or 5736 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 65992380 is about 8123.5694125181. The cubic root of 65992380 is about 404.1084488127.

It can be divided in two parts, 659 and 92380, that added together give a palindrome (93039).

The spelling of 65992380 in words is "sixty-five million, nine hundred ninety-two thousand, three hundred eighty".