387872066 has 4 divisors (see below), whose sum is σ = 581808102. Its totient is φ = 193936032.

The previous prime is 387872033. The next prime is 387872101. The reversal of 387872066 is 660278783.

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

It can be written as a sum of positive squares in only one way, i.e., 281266441 + 106605625 = 16771^2 + 10325^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 387872066.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96968015 + ... + 96968018.

Almost surely, 2^387872066 is an apocalyptic number.

387872066 is a deficient number, since it is larger than the sum of its proper divisors (193936036).

387872066 is a wasteful number, since it uses less digits than its factorization.

387872066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193936035.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 387872066 is about 19694.4679034494. The cubic root of 387872066 is about 729.2831306209.

The spelling of 387872066 in words is "three hundred eighty-seven million, eight hundred seventy-two thousand, sixty-six".