2406621 has 8 divisors (see below), whose sum is σ = 3667264. Its totient is φ = 1375200.

The previous prime is 2406619. The next prime is 2406629. The reversal of 2406621 is 1266042.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2406621 - 2¹ = 2406619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 114601 = 2406621 / (2 + 4 + 0 + 6 + 6 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2406629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57280 + ... + 57321.

It is an arithmetic number, because the mean of its divisors is an integer number (458408).

2^2406621 is an apocalyptic number.

2406621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2406621 is a deficient number, since it is larger than the sum of its proper divisors (1260643).

2406621 is a wasteful number, since it uses less digits than its factorization.

2406621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114611.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2406621 is about 1551.3287852676. The cubic root of 2406621 is about 134.0095968474.

The spelling of 2406621 in words is "two million, four hundred six thousand, six hundred twenty-one".