667446436 has 24 divisors (see below), whose sum is σ = 1194560640. Its totient is φ = 326163552.

The previous prime is 667446433. The next prime is 667446443. The reversal of 667446436 is 634644766.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (667446433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159426 + ... + 163558.

It is an arithmetic number, because the mean of its divisors is an integer number (49773360).

Almost surely, 2^667446436 is an apocalyptic number.

It is an amenable number.

667446436 is a deficient number, since it is larger than the sum of its proper divisors (527114204).

667446436 is a wasteful number, since it uses less digits than its factorization.

667446436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043 (or 5041 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 46.

The square root of 667446436 is about 25834.9847300129. The cubic root of 667446436 is about 873.9209276578.

The spelling of 667446436 in words is "six hundred sixty-seven million, four hundred forty-six thousand, four hundred thirty-six".