1401663697 has 8 divisors (see below), whose sum is σ = 1602577152. Its totient is φ = 1200919200.

The previous prime is 1401663643. The next prime is 1401663709. The reversal of 1401663697 is 7963661041.

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

It is a cyclic number.

It is not a de Polignac number, because 1401663697 - 2²³ = 1393275089 is a prime.

It is a super-2 number, since 2×1401663697² = 3929322238975415618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401663097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23929 + ... + 58102.

It is an arithmetic number, because the mean of its divisors is an integer number (200322144).

Almost surely, 2^1401663697 is an apocalyptic number.

It is an amenable number.

1401663697 is a deficient number, since it is larger than the sum of its proper divisors (200913455).

1401663697 is an equidigital number, since it uses as much as digits as its factorization.

1401663697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84479.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 1401663697 is about 37438.7993530776. The cubic root of 1401663697 is about 1119.1318998633.

The spelling of 1401663697 in words is "one billion, four hundred one million, six hundred sixty-three thousand, six hundred ninety-seven".