400674 has 16 divisors (see below), whose sum is σ = 820512. Its totient is φ = 130368.

The previous prime is 400657. The next prime is 400679. The reversal of 400674 is 476004.

400674 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 400674.

It is not an unprimeable number, because it can be changed into a prime (400679) by changing a digit.

400674 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519 + ... + 1034.

It is an arithmetic number, because the mean of its divisors is an integer number (51282).

2⁴⁰⁰⁶⁷⁴ is an apocalyptic number.

400674 is an abundant number, since it is smaller than the sum of its proper divisors (419838).

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

400674 is a wasteful number, since it uses less digits than its factorization.

400674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 400674 is about 632.9881515479. The cubic root of 400674 is about 73.7219907044.

Adding to 400674 its reverse (476004), we get a palindrome (876678).

The spelling of 400674 in words is "four hundred thousand, six hundred seventy-four".