61992757 has 2 divisors, whose sum is σ = 61992758. Its totient is φ = 61992756.

The previous prime is 61992743. The next prime is 61992767. The reversal of 61992757 is 75729916.

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., 47900241 + 14092516 = 6921^2 + 3754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61992757 is a prime.

It is a super-2 number, since 2×61992757² = 7686203840922098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61992767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30996378 + 30996379.

It is an arithmetic number, because the mean of its divisors is an integer number (30996379).

Almost surely, 2^61992757 is an apocalyptic number.

It is an amenable number.

61992757 is a deficient number, since it is larger than the sum of its proper divisors (1).

61992757 is an equidigital number, since it uses as much as digits as its factorization.

61992757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 46.

The square root of 61992757 is about 7873.5479296185. The cubic root of 61992757 is about 395.7737479974.

The spelling of 61992757 in words is "sixty-one million, nine hundred ninety-two thousand, seven hundred fifty-seven".