64025940 has 72 divisors (see below), whose sum is σ = 197074080. Its totient is φ = 15519680.

The previous prime is 64025903. The next prime is 64025957. The reversal of 64025940 is 4952046.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 64025898 and 64025907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2851 + ... + 11669.

It is an arithmetic number, because the mean of its divisors is an integer number (2737140).

Almost surely, 2^64025940 is an apocalyptic number.

64025940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64025940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98537040).

64025940 is an abundant number, since it is smaller than the sum of its proper divisors (133048140).

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

64025940 is a wasteful number, since it uses less digits than its factorization.

64025940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8853 (or 8840 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 64025940 is about 8001.6210857551. The cubic root of 64025940 is about 400.0540343671.

Adding to 64025940 its reverse (4952046), we get a palindrome (68977986).

The spelling of 64025940 in words is "sixty-four million, twenty-five thousand, nine hundred forty".