60997931 has 2 divisors, whose sum is σ = 60997932. Its totient is φ = 60997930.

The previous prime is 60997927. The next prime is 60997943. The reversal of 60997931 is 13979906.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 60997931 - 2² = 60997927 is a prime.

It is a super-2 number, since 2×60997931² = 7441495172561522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (60997901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30498965 + 30498966.

It is an arithmetic number, because the mean of its divisors is an integer number (30498966).

Almost surely, 2^60997931 is an apocalyptic number.

60997931 is a deficient number, since it is larger than the sum of its proper divisors (1).

60997931 is an equidigital number, since it uses as much as digits as its factorization.

60997931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 60997931 is about 7810.1172206312. The cubic root of 60997931 is about 393.6452676519.

The spelling of 60997931 in words is "sixty million, nine hundred ninety-seven thousand, nine hundred thirty-one".