2617662421 has 16 divisors (see below), whose sum is σ = 2988171648. Its totient is φ = 2271672000.

The previous prime is 2617662389. The next prime is 2617662427. The reversal of 2617662421 is 1242667162.

2617662421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2617662421 - 2⁵ = 2617662389 is a prime.

It is a super-3 number, since 3×2617662421³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2617662427) 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, 39105 + ... + 82246.

It is an arithmetic number, because the mean of its divisors is an integer number (186760728).

Almost surely, 2^2617662421 is an apocalyptic number.

It is an amenable number.

2617662421 is a deficient number, since it is larger than the sum of its proper divisors (370509227).

2617662421 is a wasteful number, since it uses less digits than its factorization.

2617662421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121452.

The product of its digits is 48384, while the sum is 37.

The square root of 2617662421 is about 51163.0962804246. The cubic root of 2617662421 is about 1378.1755665555.

The spelling of 2617662421 in words is "two billion, six hundred seventeen million, six hundred sixty-two thousand, four hundred twenty-one".