61296979 has 2 divisors, whose sum is σ = 61296980. Its totient is φ = 61296978.

The previous prime is 61296971. The next prime is 61296997. The reversal of 61296979 is 97969216.

Together with next prime (61296997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61296979 - 2³ = 61296971 is a prime.

It is not a weakly prime, because it can be changed into another prime (61296971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30648489 + 30648490.

It is an arithmetic number, because the mean of its divisors is an integer number (30648490).

Almost surely, 2^61296979 is an apocalyptic number.

61296979 is a deficient number, since it is larger than the sum of its proper divisors (1).

61296979 is an equidigital number, since it uses as much as digits as its factorization.

61296979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 49.

The square root of 61296979 is about 7829.2387241672. The cubic root of 61296979 is about 394.2875133506.

The spelling of 61296979 in words is "sixty-one million, two hundred ninety-six thousand, nine hundred seventy-nine".