60988891 has 4 divisors (see below), whose sum is σ = 61427800. Its totient is φ = 60549984.

The previous prime is 60988871. The next prime is 60988897. The reversal of 60988891 is 19888906.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 60988891 - 2²¹ = 58891739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60988897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219246 + ... + 219523.

It is an arithmetic number, because the mean of its divisors is an integer number (15356950).

Almost surely, 2^60988891 is an apocalyptic number.

60988891 is a deficient number, since it is larger than the sum of its proper divisors (438909).

60988891 is a wasteful number, since it uses less digits than its factorization.

60988891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438908.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 60988891 is about 7809.5384626750. The cubic root of 60988891 is about 393.6258203856.

The spelling of 60988891 in words is "sixty million, nine hundred eighty-eight thousand, eight hundred ninety-one".