61622563 has 2 divisors, whose sum is σ = 61622564. Its totient is φ = 61622562.

The previous prime is 61622557. The next prime is 61622591. The reversal of 61622563 is 36522616.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61622563 is a prime.

It is not a weakly prime, because it can be changed into another prime (61622503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30811281 + 30811282.

It is an arithmetic number, because the mean of its divisors is an integer number (30811282).

Almost surely, 2^61622563 is an apocalyptic number.

61622563 is a deficient number, since it is larger than the sum of its proper divisors (1).

61622563 is an equidigital number, since it uses as much as digits as its factorization.

61622563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 61622563 is about 7850.0040127378. The cubic root of 61622563 is about 394.9843779540.

The spelling of 61622563 in words is "sixty-one million, six hundred twenty-two thousand, five hundred sixty-three".