67500666 has 12 divisors (see below), whose sum is σ = 146251482. Its totient is φ = 22500216.

The previous prime is 67500649. The next prime is 67500683. The reversal of 67500666 is 66600576.

It is an interprime number because it is at equal distance from previous prime (67500649) and next prime (67500683).

It can be written as a sum of positive squares in only one way, i.e., 65950641 + 1550025 = 8121^2 + 1245^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 67500666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1875001 + ... + 1875036.

Almost surely, 2^67500666 is an apocalyptic number.

67500666 is an abundant number, since it is smaller than the sum of its proper divisors (78750816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67500666 is a wasteful number, since it uses less digits than its factorization.

67500666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750045 (or 3750042 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 67500666 is about 8215.8788939468. The cubic root of 67500666 is about 407.1639815975.

The spelling of 67500666 in words is "sixty-seven million, five hundred thousand, six hundred sixty-six".