61877401 has 2 divisors, whose sum is σ = 61877402. Its totient is φ = 61877400.

The previous prime is 61877369. The next prime is 61877411. The reversal of 61877401 is 10477816.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46854025 + 15023376 = 6845^2 + 3876^2 .

It is a cyclic number.

It is not a de Polignac number, because 61877401 - 2⁵ = 61877369 is a prime.

It is a nialpdrome in base 13.

It is not a weakly prime, because it can be changed into another prime (61877411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30938700 + 30938701.

It is an arithmetic number, because the mean of its divisors is an integer number (30938701).

Almost surely, 2^61877401 is an apocalyptic number.

It is an amenable number.

61877401 is a deficient number, since it is larger than the sum of its proper divisors (1).

61877401 is an equidigital number, since it uses as much as digits as its factorization.

61877401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 61877401 is about 7866.2189773741. The cubic root of 61877401 is about 395.5281105705.

The spelling of 61877401 in words is "sixty-one million, eight hundred seventy-seven thousand, four hundred one".