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400667 = 1013967
BaseRepresentation
bin1100001110100011011
3202100121112
41201310123
5100310132
612330535
73256061
oct1416433
9670545
10400667
11254033
12173a4b
131104a7
14a6031
157dab2
hex61d1b

400667 has 4 divisors (see below), whose sum is σ = 404736. Its totient is φ = 396600.

The previous prime is 400657. The next prime is 400679. The reversal of 400667 is 766004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400667 - 24 = 400651 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400607) 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, 1883 + ... + 2084.

It is an arithmetic number, because the mean of its divisors is an integer number (101184).

2400667 is an apocalyptic number.

400667 is a deficient number, since it is larger than the sum of its proper divisors (4069).

400667 is a wasteful number, since it uses less digits than its factorization.

400667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 400667 is about 632.9826221943. The cubic root of 400667 is about 73.7215613804.

The spelling of 400667 in words is "four hundred thousand, six hundred sixty-seven".

Divisors: 1 101 3967 400667