407668 has 6 divisors (see below), whose sum is σ = 713426. Its totient is φ = 203832.

The previous prime is 407657. The next prime is 407669. The reversal of 407668 is 866704.

It can be written as a sum of positive squares in only one way, i.e., 374544 + 33124 = 612^2 + 182^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50955 + ... + 50962.

2⁴⁰⁷⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

407668 is a deficient number, since it is larger than the sum of its proper divisors (305758).

407668 is a wasteful number, since it uses less digits than its factorization.

407668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101921 (or 101919 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 407668 is about 638.4888409362. The cubic root of 407668 is about 74.1484723006.

The spelling of 407668 in words is "four hundred seven thousand, six hundred sixty-eight".