2621397 has 12 divisors (see below), whose sum is σ = 3623360. Its totient is φ = 1685712.

The previous prime is 2621387. The next prime is 2621431. The reversal of 2621397 is 7931262.

It is not a de Polignac number, because 2621397 - 2¹² = 2617301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2004 + ... + 3042.

2^2621397 is an apocalyptic number.

It is an amenable number.

2621397 is a deficient number, since it is larger than the sum of its proper divisors (1001963).

2621397 is a wasteful number, since it uses less digits than its factorization.

2621397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 1071 counting only the distinct ones).

The product of its digits is 4536, while the sum is 30.

The square root of 2621397 is about 1619.0728828561. The cubic root of 2621397 is about 137.8830662460.

The spelling of 2621397 in words is "two million, six hundred twenty-one thousand, three hundred ninety-seven".