1401566 has 8 divisors (see below), whose sum is σ = 2113824. Its totient is φ = 696960.

The previous prime is 1401559. The next prime is 1401571. The reversal of 1401566 is 6651041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1430 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (264228).

2^1401566 is an apocalyptic number.

1401566 is a deficient number, since it is larger than the sum of its proper divisors (712258).

1401566 is a wasteful number, since it uses less digits than its factorization.

1401566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3826.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1401566 is about 1183.8775274495. The cubic root of 1401566 is about 111.9105897818.

The spelling of 1401566 in words is "one million, four hundred one thousand, five hundred sixty-six".