60077991 has 16 divisors (see below), whose sum is σ = 81914976. Its totient is φ = 39152256.

The previous prime is 60077987. The next prime is 60078023. The reversal of 60077991 is 19977006.

It is not a de Polignac number, because 60077991 - 2² = 60077987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60077291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58801 + ... + 59813.

It is an arithmetic number, because the mean of its divisors is an integer number (5119686).

Almost surely, 2^60077991 is an apocalyptic number.

60077991 is a deficient number, since it is larger than the sum of its proper divisors (21836985).

60077991 is a wasteful number, since it uses less digits than its factorization.

60077991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 60077991 is about 7750.9993549219. Note that the first 3 decimals coincide. The cubic root of 60077991 is about 391.6563153645.

The spelling of 60077991 in words is "sixty million, seventy-seven thousand, nine hundred ninety-one".