65717420 has 24 divisors (see below), whose sum is σ = 139098624. Its totient is φ = 26078976.

The previous prime is 65717401. The next prime is 65717423. The reversal of 65717420 is 2471756.

It is not an unprimeable number, because it can be changed into a prime (65717423) 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, 10397 + ... + 15476.

It is an arithmetic number, because the mean of its divisors is an integer number (5795776).

Almost surely, 2^65717420 is an apocalyptic number.

It is an amenable number.

65717420 is an abundant number, since it is smaller than the sum of its proper divisors (73381204).

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

65717420 is a wasteful number, since it uses less digits than its factorization.

65717420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26009 (or 26007 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 65717420 is about 8106.6281523208. The cubic root of 65717420 is about 403.5464226252.

The spelling of 65717420 in words is "sixty-five million, seven hundred seventeen thousand, four hundred twenty".