2670921 has 48 divisors (see below), whose sum is σ = 4777920. Its totient is φ = 1457280.

The previous prime is 2670881. The next prime is 2670923. The reversal of 2670921 is 1290762.

It is not a de Polignac number, because 2670921 - 2⁷ = 2670793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2670923) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116116 + ... + 116138.

It is an arithmetic number, because the mean of its divisors is an integer number (99540).

2^2670921 is an apocalyptic number.

It is an amenable number.

2670921 is a deficient number, since it is larger than the sum of its proper divisors (2106999).

2670921 is a wasteful number, since it uses less digits than its factorization.

2670921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2670921 is about 1634.2952609611. The cubic root of 2670921 is about 138.7459604375.

The spelling of 2670921 in words is "two million, six hundred seventy thousand, nine hundred twenty-one".