61316377 has 2 divisors, whose sum is σ = 61316378. Its totient is φ = 61316376.

The previous prime is 61316369. The next prime is 61316383. The reversal of 61316377 is 77361316.

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., 51897616 + 9418761 = 7204^2 + 3069^2 .

It is a cyclic number.

It is not a de Polignac number, because 61316377 - 2³ = 61316369 is a prime.

It is a super-2 number, since 2×61316377² = 7519396176812258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61316317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30658188 + 30658189.

It is an arithmetic number, because the mean of its divisors is an integer number (30658189).

Almost surely, 2^61316377 is an apocalyptic number.

It is an amenable number.

61316377 is a deficient number, since it is larger than the sum of its proper divisors (1).

61316377 is an equidigital number, since it uses as much as digits as its factorization.

61316377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 34.

The square root of 61316377 is about 7830.4774439366. The cubic root of 61316377 is about 394.3291009495.

The spelling of 61316377 in words is "sixty-one million, three hundred sixteen thousand, three hundred seventy-seven".