61569023 has 2 divisors, whose sum is σ = 61569024. Its totient is φ = 61569022.

The previous prime is 61569017. The next prime is 61569049. The reversal of 61569023 is 32096516.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61569023 - 2⁶ = 61568959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61563023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30784511 + 30784512.

It is an arithmetic number, because the mean of its divisors is an integer number (30784512).

Almost surely, 2^61569023 is an apocalyptic number.

61569023 is a deficient number, since it is larger than the sum of its proper divisors (1).

61569023 is an equidigital number, since it uses as much as digits as its factorization.

61569023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 61569023 is about 7846.5930823511. The cubic root of 61569023 is about 394.8699523816.

The spelling of 61569023 in words is "sixty-one million, five hundred sixty-nine thousand, twenty-three".