2021097604 has 6 divisors (see below), whose sum is σ = 3536920814. Its totient is φ = 1010548800.

The previous prime is 2021097599. The next prime is 2021097623. The reversal of 2021097604 is 4067901202.

It can be written as a sum of positive squares in only one way, i.e., 1016334400 + 1004763204 = 31880^2 + 31698^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 252637197 + ... + 252637204.

Almost surely, 2^2021097604 is an apocalyptic number.

It is an amenable number.

2021097604 is a deficient number, since it is larger than the sum of its proper divisors (1515823210).

2021097604 is a wasteful number, since it uses less digits than its factorization.

2021097604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505274405 (or 505274403 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 2021097604 is about 44956.6191344500. The cubic root of 2021097604 is about 1264.3357819460.

Adding to 2021097604 its reverse (4067901202), we get a palindrome (6088998806).

The spelling of 2021097604 in words is "two billion, twenty-one million, ninety-seven thousand, six hundred four".