61368863 has 2 divisors, whose sum is σ = 61368864. Its totient is φ = 61368862.

The previous prime is 61368847. The next prime is 61368877. The reversal of 61368863 is 36886316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61368863 - 2⁴ = 61368847 is a prime.

It is a super-2 number, since 2×61368863² = 7532274691825538, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61368863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61368823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30684431 + 30684432.

It is an arithmetic number, because the mean of its divisors is an integer number (30684432).

Almost surely, 2^61368863 is an apocalyptic number.

61368863 is a deficient number, since it is larger than the sum of its proper divisors (1).

61368863 is an equidigital number, since it uses as much as digits as its factorization.

61368863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 61368863 is about 7833.8281191254. The cubic root of 61368863 is about 394.4415823431.

The spelling of 61368863 in words is "sixty-one million, three hundred sixty-eight thousand, eight hundred sixty-three".