65878488 has 128 divisors (see below), whose sum is σ = 204120000. Its totient is φ = 19547136.

The previous prime is 65878481. The next prime is 65878489. The reversal of 65878488 is 88487856.

It is a super-2 number, since 2×65878488² = 8679950362332288, which contains 22 as substring.

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 (65878481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81028 + ... + 81836.

Almost surely, 2^65878488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65878488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102060000).

65878488 is an abundant number, since it is smaller than the sum of its proper divisors (138241512).

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

65878488 is a wasteful number, since it uses less digits than its factorization.

65878488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 856 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The square root of 65878488 is about 8116.5564126666. The cubic root of 65878488 is about 403.8758400281.

It can be divided in two parts, 6587848 and 8, that added together give a palindrome (6587856).

The spelling of 65878488 in words is "sixty-five million, eight hundred seventy-eight thousand, four hundred eighty-eight".