2690690 has 8 divisors (see below), whose sum is σ = 4843260. Its totient is φ = 1076272.

The previous prime is 2690689. The next prime is 2690711. The reversal of 2690690 is 960962.

It can be written as a sum of positive squares in 2 ways, for example, as 2582449 + 108241 = 1607^2 + 329^2 .

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

It is a super-2 number, since 2×2690690² = 14479625352200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134525 + ... + 134544.

2^2690690 is an apocalyptic number.

2690690 is a deficient number, since it is larger than the sum of its proper divisors (2152570).

2690690 is a wasteful number, since it uses less digits than its factorization.

2690690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269076.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 2690690 is about 1640.3322834109. The cubic root of 2690690 is about 139.0874318384.

The spelling of 2690690 in words is "two million, six hundred ninety thousand, six hundred ninety".