61808701 has 2 divisors, whose sum is σ = 61808702. Its totient is φ = 61808700.

The previous prime is 61808693. The next prime is 61808717. The reversal of 61808701 is 10780816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55428025 + 6380676 = 7445^2 + 2526^2 .

It is a cyclic number.

It is not a de Polignac number, because 61808701 - 2³ = 61808693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61808101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30904350 + 30904351.

It is an arithmetic number, because the mean of its divisors is an integer number (30904351).

Almost surely, 2^61808701 is an apocalyptic number.

It is an amenable number.

61808701 is a deficient number, since it is larger than the sum of its proper divisors (1).

61808701 is an equidigital number, since it uses as much as digits as its factorization.

61808701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 61808701 is about 7861.8509907019. The cubic root of 61808701 is about 395.3816766908.

The spelling of 61808701 in words is "sixty-one million, eight hundred eight thousand, seven hundred one".