2420690 has 8 divisors (see below), whose sum is σ = 4357260. Its totient is φ = 968272.

The previous prime is 2420689. The next prime is 2420699. The reversal of 2420690 is 960242.

It can be written as a sum of positive squares in 2 ways, for example, as 2343961 + 76729 = 1531^2 + 277^2 .

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

It is a super-2 number, since 2×2420690² = 11719480152200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2420699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121025 + ... + 121044.

2^2420690 is an apocalyptic number.

2420690 is a deficient number, since it is larger than the sum of its proper divisors (1936570).

2420690 is a wasteful number, since it uses less digits than its factorization.

2420690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242076.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2420690 is about 1555.8566772039. The cubic root of 2420690 is about 134.2702276866.

The spelling of 2420690 in words is "two million, four hundred twenty thousand, six hundred ninety".