102060639 has 18 divisors (see below), whose sum is σ = 156606840. Its totient is φ = 64036416.

The previous prime is 102060617. The next prime is 102060667. The reversal of 102060639 is 936060201.

It is a happy number.

102060639 is a `hidden beast` number, since 1 + 0 + 20 + 6 + 0 + 639 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-102060639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102060239) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17019 + ... + 22220.

It is an arithmetic number, because the mean of its divisors is an integer number (8700380).

Almost surely, 2^102060639 is an apocalyptic number.

102060639 is a deficient number, since it is larger than the sum of its proper divisors (54546201).

102060639 is a wasteful number, since it uses less digits than its factorization.

102060639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39279 (or 39259 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 102060639 is about 10102.5065701538. The cubic root of 102060639 is about 467.3254444743.

The spelling of 102060639 in words is "one hundred two million, sixty thousand, six hundred thirty-nine".