2621663497 has 8 divisors (see below), whose sum is σ = 2672175744. Its totient is φ = 2571190128.

The previous prime is 2621663489. The next prime is 2621663507. The reversal of 2621663497 is 7943661262.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2621663497 - 2³ = 2621663489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2621669497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152038 + ... + 168400.

It is an arithmetic number, because the mean of its divisors is an integer number (334021968).

Almost surely, 2^2621663497 is an apocalyptic number.

It is an amenable number.

2621663497 is a deficient number, since it is larger than the sum of its proper divisors (50512247).

2621663497 is a wasteful number, since it uses less digits than its factorization.

2621663497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19439.

The product of its digits is 653184, while the sum is 46.

The square root of 2621663497 is about 51202.1825413722. The cubic root of 2621663497 is about 1378.8773858657.

The spelling of 2621663497 in words is "two billion, six hundred twenty-one million, six hundred sixty-three thousand, four hundred ninety-seven".