60997639 has 2 divisors, whose sum is σ = 60997640. Its totient is φ = 60997638.

The previous prime is 60997631. The next prime is 60997667. The reversal of 60997639 is 93679906.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 60997639 - 2³ = 60997631 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 60997592 and 60997601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60997631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30498819 + 30498820.

It is an arithmetic number, because the mean of its divisors is an integer number (30498820).

Almost surely, 2^60997639 is an apocalyptic number.

60997639 is a deficient number, since it is larger than the sum of its proper divisors (1).

60997639 is an equidigital number, since it uses as much as digits as its factorization.

60997639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 551124, while the sum is 49.

The square root of 60997639 is about 7810.0985269073. The cubic root of 60997639 is about 393.6446395180.

The spelling of 60997639 in words is "sixty million, nine hundred ninety-seven thousand, six hundred thirty-nine".