60497991 has 6 divisors (see below), whose sum is σ = 87386000. Its totient is φ = 40331988.

The previous prime is 60497971. The next prime is 60497993. The reversal of 60497991 is 19979406.

It is not a de Polignac number, because 60497991 - 2¹⁹ = 59973703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60497993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3360991 + ... + 3361008.

Almost surely, 2^60497991 is an apocalyptic number.

60497991 is a deficient number, since it is larger than the sum of its proper divisors (26888009).

60497991 is a wasteful number, since it uses less digits than its factorization.

60497991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6722005 (or 6722002 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 60497991 is about 7778.0454485687. The cubic root of 60497991 is about 392.5668751589.

The spelling of 60497991 in words is "sixty million, four hundred ninety-seven thousand, nine hundred ninety-one".