667672500 has 120 divisors (see below), whose sum is σ = 2123995104. Its totient is φ = 161840000.

The previous prime is 667672493. The next prime is 667672549. The reversal of 667672500 is 5276766.

It is a super-4 number, since 4×667672500⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 78454 + ... + 86546.

Almost surely, 2^667672500 is an apocalyptic number.

667672500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667672500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061997552).

667672500 is an abundant number, since it is smaller than the sum of its proper divisors (1456322604).

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

667672500 is a wasteful number, since it uses less digits than its factorization.

667672500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8131 (or 8114 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 667672500 is about 25839.3595121861. The cubic root of 667672500 is about 874.0195821462.

The spelling of 667672500 in words is "six hundred sixty-seven million, six hundred seventy-two thousand, five hundred".