61830907 has 2 divisors, whose sum is σ = 61830908. Its totient is φ = 61830906.

The previous prime is 61830893. The next prime is 61830919. The reversal of 61830907 is 70903816.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61830907 is a prime.

It is a super-2 number, since 2×61830907² = 7646122120885298, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (61830707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30915453 + 30915454.

It is an arithmetic number, because the mean of its divisors is an integer number (30915454).

Almost surely, 2^61830907 is an apocalyptic number.

61830907 is a deficient number, since it is larger than the sum of its proper divisors (1).

61830907 is an equidigital number, since it uses as much as digits as its factorization.

61830907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 61830907 is about 7863.2631267178. The cubic root of 61830907 is about 395.4290205876.

The spelling of 61830907 in words is "sixty-one million, eight hundred thirty thousand, nine hundred seven".