401661354 has 8 divisors (see below), whose sum is σ = 803322720. Its totient is φ = 133887116.

The previous prime is 401661353. The next prime is 401661373. The reversal of 401661354 is 453166104.

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

401661354 is an admirable number.

It is a super-2 number, since 2×401661354² = 322663686594226632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401661353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33471774 + ... + 33471785.

It is an arithmetic number, because the mean of its divisors is an integer number (100415340).

Almost surely, 2^401661354 is an apocalyptic number.

401661354 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.

401661354 is a wasteful number, since it uses less digits than its factorization.

401661354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66943564.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 401661354 is about 20041.4908128113. The cubic root of 401661354 is about 737.8249707938.

The spelling of 401661354 in words is "four hundred one million, six hundred sixty-one thousand, three hundred fifty-four".