61416997 has 2 divisors, whose sum is σ = 61416998. Its totient is φ = 61416996.

The previous prime is 61416977. The next prime is 61417007. The reversal of 61416997 is 79961416.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37933281 + 23483716 = 6159^2 + 4846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61416997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61416907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30708498 + 30708499.

It is an arithmetic number, because the mean of its divisors is an integer number (30708499).

Almost surely, 2^61416997 is an apocalyptic number.

It is an amenable number.

61416997 is a deficient number, since it is larger than the sum of its proper divisors (1).

61416997 is an equidigital number, since it uses as much as digits as its factorization.

61416997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 43.

The square root of 61416997 is about 7836.8997058786. The cubic root of 61416997 is about 394.5446807143.

The spelling of 61416997 in words is "sixty-one million, four hundred sixteen thousand, nine hundred ninety-seven".