2621023427 has 16 divisors (see below), whose sum is σ = 2965698144. Its totient is φ = 2295360000.

The previous prime is 2621023357. The next prime is 2621023439. The reversal of 2621023427 is 7243201262.

It is a cyclic number.

It is not a de Polignac number, because 2621023427 - 2¹⁶ = 2620957891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2621023427.

It is not an unprimeable number, because it can be changed into a prime (2621023477) 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, 9227 + ... + 72987.

It is an arithmetic number, because the mean of its divisors is an integer number (185356134).

Almost surely, 2^2621023427 is an apocalyptic number.

2621023427 is a deficient number, since it is larger than the sum of its proper divisors (344674717).

2621023427 is a wasteful number, since it uses less digits than its factorization.

2621023427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63910.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 2621023427 is about 51195.9317426688. The cubic root of 2621023427 is about 1378.7651606971.

Adding to 2621023427 its reverse (7243201262), we get a palindrome (9864224689).

The spelling of 2621023427 in words is "two billion, six hundred twenty-one million, twenty-three thousand, four hundred twenty-seven".