61564326 has 32 divisors (see below), whose sum is σ = 128563200. Its totient is φ = 19631040.

The previous prime is 61564319. The next prime is 61564333. The reversal of 61564326 is 62346516.

It is an interprime number because it is at equal distance from previous prime (61564319) and next prime (61564333).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14695 + ... + 18413.

It is an arithmetic number, because the mean of its divisors is an integer number (4017600).

Almost surely, 2^61564326 is an apocalyptic number.

61564326 is an abundant number, since it is smaller than the sum of its proper divisors (66998874).

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

61564326 is a wasteful number, since it uses less digits than its factorization.

61564326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3844.

The product of its digits is 25920, while the sum is 33.

The square root of 61564326 is about 7846.2937747704. The cubic root of 61564326 is about 394.8599107988.

The spelling of 61564326 in words is "sixty-one million, five hundred sixty-four thousand, three hundred twenty-six".