65938040 has 32 divisors (see below), whose sum is σ = 169555680. Its totient is φ = 22607232.

The previous prime is 65938027. The next prime is 65938043. The reversal of 65938040 is 4083956.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65938043) 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, 117467 + ... + 118026.

It is an arithmetic number, because the mean of its divisors is an integer number (5298615).

Almost surely, 2^65938040 is an apocalyptic number.

It is an amenable number.

65938040 is an abundant number, since it is smaller than the sum of its proper divisors (103617640).

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

65938040 is a wasteful number, since it uses less digits than its factorization.

65938040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235511 (or 235507 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 65938040 is about 8120.2241348377. The cubic root of 65938040 is about 403.9975002296.

The spelling of 65938040 in words is "sixty-five million, nine hundred thirty-eight thousand, forty".