61023979 has 2 divisors, whose sum is σ = 61023980. Its totient is φ = 61023978.

The previous prime is 61023959. The next prime is 61023983. The reversal of 61023979 is 97932016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61023979 - 2¹¹ = 61021931 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61023929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30511989 + 30511990.

It is an arithmetic number, because the mean of its divisors is an integer number (30511990).

Almost surely, 2^61023979 is an apocalyptic number.

61023979 is a deficient number, since it is larger than the sum of its proper divisors (1).

61023979 is an equidigital number, since it uses as much as digits as its factorization.

61023979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 61023979 is about 7811.7846232471. The cubic root of 61023979 is about 393.7012925725.

The spelling of 61023979 in words is "sixty-one million, twenty-three thousand, nine hundred seventy-nine".