65883888 has 80 divisors (see below), whose sum is σ = 216136960. Its totient is φ = 18823104.

The previous prime is 65883863. The next prime is 65883889. The reversal of 65883888 is 88838856.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65883889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7870 + ... + 13917.

It is an arithmetic number, because the mean of its divisors is an integer number (2701712).

Almost surely, 2^65883888 is an apocalyptic number.

It is an amenable number.

65883888 is an abundant number, since it is smaller than the sum of its proper divisors (150253072).

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

65883888 is a wasteful number, since it uses less digits than its factorization.

65883888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21811 (or 21799 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 54.

The square root of 65883888 is about 8116.8890592394. The cubic root of 65883888 is about 403.8868748389.

The spelling of 65883888 in words is "sixty-five million, eight hundred eighty-three thousand, eight hundred eighty-eight".