667272390 has 32 divisors (see below), whose sum is σ = 1608343776. Its totient is φ = 177173760.

The previous prime is 667272383. The next prime is 667272391. The reversal of 667272390 is 93272766.

667272390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667272391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40741 + ... + 54720.

It is an arithmetic number, because the mean of its divisors is an integer number (50260743).

Almost surely, 2^667272390 is an apocalyptic number.

667272390 is an abundant number, since it is smaller than the sum of its proper divisors (941071386).

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

667272390 is a wasteful number, since it uses less digits than its factorization.

667272390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95704.

The product of its (nonzero) digits is 190512, while the sum is 42.

The square root of 667272390 is about 25831.6160934619. The cubic root of 667272390 is about 873.8449586829.

The spelling of 667272390 in words is "six hundred sixty-seven million, two hundred seventy-two thousand, three hundred ninety".