61976077 has 2 divisors, whose sum is σ = 61976078. Its totient is φ = 61976076.

The previous prime is 61976071. The next prime is 61976141. The reversal of 61976077 is 77067916.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60933636 + 1042441 = 7806^2 + 1021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61976077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61976071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30988038 + 30988039.

It is an arithmetic number, because the mean of its divisors is an integer number (30988039).

Almost surely, 2^61976077 is an apocalyptic number.

It is an amenable number.

61976077 is a deficient number, since it is larger than the sum of its proper divisors (1).

61976077 is an equidigital number, since it uses as much as digits as its factorization.

61976077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111132, while the sum is 43.

The square root of 61976077 is about 7872.4886154252. The cubic root of 61976077 is about 395.7382486983.

The spelling of 61976077 in words is "sixty-one million, nine hundred seventy-six thousand, seventy-seven".