101902066 has 12 divisors (see below), whose sum is σ = 177808878. Its totient is φ = 43672272.

The previous prime is 101902039. The next prime is 101902069. The reversal of 101902066 is 660209101.

It can be written as a sum of positive squares in only one way, i.e., 88906041 + 12996025 = 9429^2 + 3605^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 101902066.

It is not an unprimeable number, because it can be changed into a prime (101902069) 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, 519811 + ... + 520006.

Almost surely, 2^101902066 is an apocalyptic number.

101902066 is a deficient number, since it is larger than the sum of its proper divisors (75906812).

101902066 is a wasteful number, since it uses less digits than its factorization.

101902066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039833 (or 1039826 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 101902066 is about 10094.6553185337. The cubic root of 101902066 is about 467.0832890557.

The spelling of 101902066 in words is "one hundred one million, nine hundred two thousand, sixty-six".