20610401 has 4 divisors (see below), whose sum is σ = 23554752. Its totient is φ = 17666052.

The previous prime is 20610397. The next prime is 20610407. The reversal of 20610401 is 10401602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10401602 = 2 ⋅5200801.

It is a cyclic number.

It is not a de Polignac number, because 20610401 - 2² = 20610397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20610407) 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, 1472165 + ... + 1472178.

It is an arithmetic number, because the mean of its divisors is an integer number (5888688).

Almost surely, 2^20610401 is an apocalyptic number.

It is an amenable number.

20610401 is a deficient number, since it is larger than the sum of its proper divisors (2944351).

20610401 is an equidigital number, since it uses as much as digits as its factorization.

20610401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944350.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 20610401 is about 4539.8679496214. The cubic root of 20610401 is about 274.1756071441.

The spelling of 20610401 in words is "twenty million, six hundred ten thousand, four hundred one".