65390364 has 72 divisors (see below), whose sum is σ = 188501040. Its totient is φ = 18934272.

The previous prime is 65390341. The next prime is 65390371. The reversal of 65390364 is 46309356.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 3847 + ... + 12065.

It is an arithmetic number, because the mean of its divisors is an integer number (2618070).

Almost surely, 2^65390364 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 65390364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94250520).

65390364 is an abundant number, since it is smaller than the sum of its proper divisors (123110676).

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

65390364 is a wasteful number, since it uses less digits than its factorization.

65390364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8259 (or 8254 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 65390364 is about 8086.4308566883. The cubic root of 65390364 is about 402.8758656068.

The spelling of 65390364 in words is "sixty-five million, three hundred ninety thousand, three hundred sixty-four".