60979921 has 2 divisors, whose sum is σ = 60979922. Its totient is φ = 60979920.

The previous prime is 60979909. The next prime is 60979937. The reversal of 60979921 is 12997906.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59845696 + 1134225 = 7736^2 + 1065^2 .

It is a cyclic number.

It is not a de Polignac number, because 60979921 - 2⁹ = 60979409 is a prime.

It is not a weakly prime, because it can be changed into another prime (60979951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30489960 + 30489961.

It is an arithmetic number, because the mean of its divisors is an integer number (30489961).

Almost surely, 2^60979921 is an apocalyptic number.

It is an amenable number.

60979921 is a deficient number, since it is larger than the sum of its proper divisors (1).

60979921 is an equidigital number, since it uses as much as digits as its factorization.

60979921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 60979921 is about 7808.9641438542. The cubic root of 60979921 is about 393.6065218069.

The spelling of 60979921 in words is "sixty million, nine hundred seventy-nine thousand, nine hundred twenty-one".