2990623 has 4 divisors (see below), whose sum is σ = 3166560. Its totient is φ = 2814688.

The previous prime is 2990609. The next prime is 2990629. The reversal of 2990623 is 3260992.

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 2990623 - 2¹³ = 2982431 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87943 + ... + 87976.

It is an arithmetic number, because the mean of its divisors is an integer number (791640).

2^2990623 is an apocalyptic number.

2990623 is a deficient number, since it is larger than the sum of its proper divisors (175937).

2990623 is a wasteful number, since it uses less digits than its factorization.

2990623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175936.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 2990623 is about 1729.3417822975. The cubic root of 2990623 is about 144.0745338172.

It can be divided in two parts, 29906 and 23, that added together give a square (29929 = 173²).

The spelling of 2990623 in words is "two million, nine hundred ninety thousand, six hundred twenty-three".