30401663 has 4 divisors (see below), whose sum is σ = 30620520. Its totient is φ = 30182808.

The previous prime is 30401659. The next prime is 30401681. The reversal of 30401663 is 36610403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36610403 = 151 ⋅242453.

It is a cyclic number.

It is not a de Polignac number, because 30401663 - 2² = 30401659 is a prime.

It is a super-2 number, since 2×30401663² = 1848522226331138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30401603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109220 + ... + 109497.

It is an arithmetic number, because the mean of its divisors is an integer number (7655130).

Almost surely, 2^30401663 is an apocalyptic number.

30401663 is a deficient number, since it is larger than the sum of its proper divisors (218857).

30401663 is a wasteful number, since it uses less digits than its factorization.

30401663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218856.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 30401663 is about 5513.7703071492. The cubic root of 30401663 is about 312.1038410381.

The spelling of 30401663 in words is "thirty million, four hundred one thousand, six hundred sixty-three".