61314977 has 2 divisors, whose sum is σ = 61314978. Its totient is φ = 61314976.

The previous prime is 61314923. The next prime is 61314997. The reversal of 61314977 is 77941316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59737441 + 1577536 = 7729^2 + 1256^2 .

It is a cyclic number.

It is not a de Polignac number, because 61314977 - 2¹⁴ = 61298593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61314977.

It is not a weakly prime, because it can be changed into another prime (61314917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30657488 + 30657489.

It is an arithmetic number, because the mean of its divisors is an integer number (30657489).

Almost surely, 2^61314977 is an apocalyptic number.

It is an amenable number.

61314977 is a deficient number, since it is larger than the sum of its proper divisors (1).

61314977 is an equidigital number, since it uses as much as digits as its factorization.

61314977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 38.

The square root of 61314977 is about 7830.3880491327. The cubic root of 61314977 is about 394.3260997668.

The spelling of 61314977 in words is "sixty-one million, three hundred fourteen thousand, nine hundred seventy-seven".