60991011 has 6 divisors (see below), whose sum is σ = 88098140. Its totient is φ = 40660668.

The previous prime is 60990997. The next prime is 60991013. The reversal of 60991011 is 11019906.

It is not a de Polignac number, because 60991011 - 2⁶ = 60990947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60991013) 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, 3388381 + ... + 3388398.

Almost surely, 2^60991011 is an apocalyptic number.

60991011 is a deficient number, since it is larger than the sum of its proper divisors (27107129).

60991011 is a wasteful number, since it uses less digits than its factorization.

60991011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776785 (or 6776782 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 60991011 is about 7809.6741929481. The cubic root of 60991011 is about 393.6303812001.

The spelling of 60991011 in words is "sixty million, nine hundred ninety-one thousand, eleven".