65621094 has 96 divisors (see below), whose sum is σ = 169019136. Its totient is φ = 16793280.

The previous prime is 65621089. The next prime is 65621107. The reversal of 65621094 is 49012656.

It is a super-2 number, since 2×65621094² = 8612255955513672, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 333004 + ... + 333200.

It is an arithmetic number, because the mean of its divisors is an integer number (1760616).

Almost surely, 2^65621094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65621094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84509568).

65621094 is an abundant number, since it is smaller than the sum of its proper divisors (103398042).

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

65621094 is a wasteful number, since it uses less digits than its factorization.

65621094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 65621094 is about 8100.6847858684. The cubic root of 65621094 is about 403.3491587413.

The spelling of 65621094 in words is "sixty-five million, six hundred twenty-one thousand, ninety-four".