2690961 has 16 divisors (see below), whose sum is σ = 4416384. Its totient is φ = 1419264.

The previous prime is 2690959. The next prime is 2690993. The reversal of 2690961 is 1690962.

It is a happy number.

It is not a de Polignac number, because 2690961 - 2¹ = 2690959 is a prime.

It is a super-2 number, since 2×2690961² = 14482542207042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2690911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4656 + ... + 5201.

It is an arithmetic number, because the mean of its divisors is an integer number (276024).

2^2690961 is an apocalyptic number.

2690961 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2690961 is a deficient number, since it is larger than the sum of its proper divisors (1725423).

2690961 is a wasteful number, since it uses less digits than its factorization.

2690961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9880.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 2690961 is about 1640.4148865455. The cubic root of 2690961 is about 139.0921012018.

Subtracting from 2690961 its reverse (1690962), we obtain a palindrome (999999).

The spelling of 2690961 in words is "two million, six hundred ninety thousand, nine hundred sixty-one".