65390622 has 16 divisors (see below), whose sum is σ = 142670592. Its totient is φ = 19815320.

The previous prime is 65390617. The next prime is 65390629. The reversal of 65390622 is 22609356.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65390629) 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, 495318 + ... + 495449.

It is an arithmetic number, because the mean of its divisors is an integer number (8916912).

Almost surely, 2^65390622 is an apocalyptic number.

65390622 is an abundant number, since it is smaller than the sum of its proper divisors (77279970).

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

65390622 is a wasteful number, since it uses less digits than its factorization.

65390622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990783.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 65390622 is about 8086.4468093224. The cubic root of 65390622 is about 402.8763954598.

Adding to 65390622 its reverse (22609356), we get a palindrome (87999978).

The spelling of 65390622 in words is "sixty-five million, three hundred ninety thousand, six hundred twenty-two".