65906380 has 24 divisors (see below), whose sum is σ = 139007232. Its totient is φ = 26247552.

The previous prime is 65906317. The next prime is 65906381. The reversal of 65906380 is 8360956.

It is not an unprimeable number, because it can be changed into a prime (65906381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2412 + ... + 11731.

It is an arithmetic number, because the mean of its divisors is an integer number (5791968).

Almost surely, 2^65906380 is an apocalyptic number.

It is an amenable number.

65906380 is an abundant number, since it is smaller than the sum of its proper divisors (73100852).

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

65906380 is a wasteful number, since it uses less digits than its factorization.

65906380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14385 (or 14383 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 65906380 is about 8118.2744471963. The cubic root of 65906380 is about 403.9328303844.

The spelling of 65906380 in words is "sixty-five million, nine hundred six thousand, three hundred eighty".