2697928921 has 32 divisors (see below), whose sum is σ = 2967552000. Its totient is φ = 2444375232.

The previous prime is 2697928903. The next prime is 2697928939. The reversal of 2697928921 is 1298297962.

It is an interprime number because it is at equal distance from previous prime (2697928903) and next prime (2697928939).

It is not a de Polignac number, because 2697928921 - 2¹¹ = 2697926873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2697928021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11781235 + ... + 11781463.

It is an arithmetic number, because the mean of its divisors is an integer number (92736000).

Almost surely, 2^2697928921 is an apocalyptic number.

It is an amenable number.

2697928921 is a deficient number, since it is larger than the sum of its proper divisors (269623079).

2697928921 is a wasteful number, since it uses less digits than its factorization.

2697928921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541.

The product of its digits is 1959552, while the sum is 55.

The square root of 2697928921 is about 51941.5914369208. The cubic root of 2697928921 is about 1392.1205183739.

The spelling of 2697928921 in words is "two billion, six hundred ninety-seven million, nine hundred twenty-eight thousand, nine hundred twenty-one".