61466891 has 2 divisors, whose sum is σ = 61466892. Its totient is φ = 61466890.

The previous prime is 61466869. The next prime is 61466897. The reversal of 61466891 is 19866416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61466891 - 2⁶ = 61466827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61466897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30733445 + 30733446.

It is an arithmetic number, because the mean of its divisors is an integer number (30733446).

Almost surely, 2^61466891 is an apocalyptic number.

61466891 is a deficient number, since it is larger than the sum of its proper divisors (1).

61466891 is an equidigital number, since it uses as much as digits as its factorization.

61466891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 61466891 is about 7840.0823337513. The cubic root of 61466891 is about 394.6514919934.

The spelling of 61466891 in words is "sixty-one million, four hundred sixty-six thousand, eight hundred ninety-one".