401667654 has 8 divisors (see below), whose sum is σ = 803335320. Its totient is φ = 133889216.

The previous prime is 401667641. The next prime is 401667659. The reversal of 401667654 is 456766104.

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

401667654 is an admirable number.

It is a super-2 number, since 2×401667654² = 322673808539727432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401667659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33472299 + ... + 33472310.

It is an arithmetic number, because the mean of its divisors is an integer number (100416915).

Almost surely, 2^401667654 is an apocalyptic number.

401667654 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.

401667654 is a wasteful number, since it uses less digits than its factorization.

401667654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66944614.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 401667654 is about 20041.6479861313. The cubic root of 401667654 is about 737.8288283328.

The spelling of 401667654 in words is "four hundred one million, six hundred sixty-seven thousand, six hundred fifty-four".