610621401 has 16 divisors (see below), whose sum is σ = 880631360. Its totient is φ = 374120640.

The previous prime is 610621399. The next prime is 610621423. The reversal of 610621401 is 104126016.

It is not a de Polignac number, because 610621401 - 2¹ = 610621399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610621441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25255 + ... + 43116.

It is an arithmetic number, because the mean of its divisors is an integer number (55039460).

Almost surely, 2^610621401 is an apocalyptic number.

It is an amenable number.

610621401 is a deficient number, since it is larger than the sum of its proper divisors (270009959).

610621401 is a wasteful number, since it uses less digits than its factorization.

610621401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68616.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 610621401 is about 24710.7547638675. The cubic root of 610621401 is about 848.3804923158.

Adding to 610621401 its reverse (104126016), we get a palindrome (714747417).

The spelling of 610621401 in words is "six hundred ten million, six hundred twenty-one thousand, four hundred one".