667401054 has 8 divisors (see below), whose sum is σ = 1334802120. Its totient is φ = 222467016.

The previous prime is 667401043. The next prime is 667401071. The reversal of 667401054 is 450104766.

It is a sphenic number, since it is the product of 3 distinct primes.

667401054 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55616749 + ... + 55616760.

It is an arithmetic number, because the mean of its divisors is an integer number (166850265).

Almost surely, 2^667401054 is an apocalyptic number.

667401054 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

667401054 is a wasteful number, since it uses less digits than its factorization.

667401054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111233514.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 667401054 is about 25834.1064099380. The cubic root of 667401054 is about 873.9011202364.

The spelling of 667401054 in words is "six hundred sixty-seven million, four hundred one thousand, fifty-four".