1402664 has 8 divisors (see below), whose sum is σ = 2630010. Its totient is φ = 701328.

The previous prime is 1402603. The next prime is 1402673. The reversal of 1402664 is 4662041.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 828100 + 574564 = 910^2 + 758^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87659 + ... + 87674.

2^1402664 is an apocalyptic number.

It is an amenable number.

1402664 is a deficient number, since it is larger than the sum of its proper divisors (1227346).

1402664 is a wasteful number, since it uses less digits than its factorization.

1402664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175339 (or 175335 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1402664 is about 1184.3411670629. The cubic root of 1402664 is about 111.9398060902.

The spelling of 1402664 in words is "one million, four hundred two thousand, six hundred sixty-four".