667493902 has 32 divisors (see below), whose sum is σ = 1125400320. Its totient is φ = 295384320.

The previous prime is 667493887. The next prime is 667493923. The reversal of 667493902 is 209394766.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28702 + ... + 46462.

It is an arithmetic number, because the mean of its divisors is an integer number (35168760).

Almost surely, 2^667493902 is an apocalyptic number.

667493902 is a deficient number, since it is larger than the sum of its proper divisors (457906418).

667493902 is a wasteful number, since it uses less digits than its factorization.

667493902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17848.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 667493902 is about 25835.9033517313. The cubic root of 667493902 is about 873.9416437009.

It can be divided in two parts, 6674 and 93902, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 667493902 in words is "six hundred sixty-seven million, four hundred ninety-three thousand, nine hundred two".