2621867 has 4 divisors (see below), whose sum is σ = 2759880. Its totient is φ = 2483856.

The previous prime is 2621863. The next prime is 2621881. The reversal of 2621867 is 7681262.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2621867 - 2² = 2621863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2621863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68978 + ... + 69015.

It is an arithmetic number, because the mean of its divisors is an integer number (689970).

2^2621867 is an apocalyptic number.

2621867 is a deficient number, since it is larger than the sum of its proper divisors (138013).

2621867 is a wasteful number, since it uses less digits than its factorization.

2621867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138012.

The product of its digits is 8064, while the sum is 32.

The square root of 2621867 is about 1619.2180211448. The cubic root of 2621867 is about 137.8913062759.

The spelling of 2621867 in words is "two million, six hundred twenty-one thousand, eight hundred sixty-seven".