667227456 has 252 divisors, whose sum is σ = 2279647968. Its totient is φ = 189796608.

The previous prime is 667227439. The next prime is 667227461. The reversal of 667227456 is 654722766.

It is a tau number, because it is divible by the number of its divisors (252).

Its product of digits (846720) is a multiple of the sum of its prime factors (270).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2939215 + ... + 2939441.

Almost surely, 2^667227456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667227456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1139823984).

667227456 is an abundant number, since it is smaller than the sum of its proper divisors (1612420512).

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

667227456 is an frugal number, since it uses more digits than its factorization.

667227456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 239 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 667227456 is about 25830.7463306812. The cubic root of 667227456 is about 873.8253433897.

The spelling of 667227456 in words is "six hundred sixty-seven million, two hundred twenty-seven thousand, four hundred fifty-six".