65038780 has 24 divisors (see below), whose sum is σ = 136805760. Its totient is φ = 25972800.

The previous prime is 65038763. The next prime is 65038783. The reversal of 65038780 is 8783056.

It is a hoax number, since the sum of its digits (37) 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 (65038783) 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, 11701 + ... + 16339.

It is an arithmetic number, because the mean of its divisors is an integer number (5700240).

Almost surely, 2^65038780 is an apocalyptic number.

It is an amenable number.

65038780 is an abundant number, since it is smaller than the sum of its proper divisors (71766980).

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

65038780 is a wasteful number, since it uses less digits than its factorization.

65038780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5349 (or 5347 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 65038780 is about 8064.6624231892. The cubic root of 65038780 is about 402.1525208570.

The spelling of 65038780 in words is "sixty-five million, thirty-eight thousand, seven hundred eighty".