667273320 has 96 divisors (see below), whose sum is σ = 2478453120. Its totient is φ = 152519040.

The previous prime is 667273297. The next prime is 667273337. The reversal of 667273320 is 23372766.

667273320 is a `hidden beast` number, since 6 + 67 + 273 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129876 + ... + 134915.

It is an arithmetic number, because the mean of its divisors is an integer number (25817220).

Almost surely, 2^667273320 is an apocalyptic number.

667273320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667273320 is an abundant number, since it is smaller than the sum of its proper divisors (1811179800).

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

667273320 is a wasteful number, since it uses less digits than its factorization.

667273320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264815 (or 264808 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The square root of 667273320 is about 25831.6340946522. The cubic root of 667273320 is about 873.8453646518.

The spelling of 667273320 in words is "six hundred sixty-seven million, two hundred seventy-three thousand, three hundred twenty".