2990621 has 4 divisors (see below), whose sum is σ = 3120672. Its totient is φ = 2860572.

The previous prime is 2990609. The next prime is 2990629. The reversal of 2990621 is 1260992.

2990621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2990621 - 2⁶ = 2990557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2990629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64991 + ... + 65036.

It is an arithmetic number, because the mean of its divisors is an integer number (780168).

2^2990621 is an apocalyptic number.

It is an amenable number.

2990621 is a deficient number, since it is larger than the sum of its proper divisors (130051).

2990621 is a wasteful number, since it uses less digits than its factorization.

2990621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130050.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 2990621 is about 1729.3412040427. The cubic root of 2990621 is about 144.0745017002.

The spelling of 2990621 in words is "two million, nine hundred ninety thousand, six hundred twenty-one".