61420199 has 2 divisors, whose sum is σ = 61420200. Its totient is φ = 61420198.

The previous prime is 61420187. The next prime is 61420213. The reversal of 61420199 is 99102416.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61420199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61420159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30710099 + 30710100.

It is an arithmetic number, because the mean of its divisors is an integer number (30710100).

Almost surely, 2^61420199 is an apocalyptic number.

61420199 is a deficient number, since it is larger than the sum of its proper divisors (1).

61420199 is an equidigital number, since it uses as much as digits as its factorization.

61420199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 61420199 is about 7837.1039931852. The cubic root of 61420199 is about 394.5515371774.

The spelling of 61420199 in words is "sixty-one million, four hundred twenty thousand, one hundred ninety-nine".