1400646 has 16 divisors (see below), whose sum is σ = 3016944. Its totient is φ = 430944.

The previous prime is 1400627. The next prime is 1400653. The reversal of 1400646 is 6460041.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8901 + ... + 9056.

It is an arithmetic number, because the mean of its divisors is an integer number (188559).

2^1400646 is an apocalyptic number.

1400646 is an abundant number, since it is smaller than the sum of its proper divisors (1616298).

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

1400646 is a wasteful number, since it uses less digits than its factorization.

1400646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17975.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1400646 is about 1183.4889099607. The cubic root of 1400646 is about 111.8860980636.

Adding to 1400646 its reverse (6460041), we get a palindrome (7860687).

The spelling of 1400646 in words is "one million, four hundred thousand, six hundred forty-six".