2632981 has 8 divisors (see below), whose sum is σ = 2848664. Its totient is φ = 2419200.

The previous prime is 2632967. The next prime is 2632999. The reversal of 2632981 is 1892362.

It can be written as a sum of positive squares in 4 ways, for example, as 180625 + 2452356 = 425^2 + 1566^2 .

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

It is a 5-Lehmer number, since φ(2632981) divides (2632981-1)⁵.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2632981 is a prime.

It is a super-2 number, since 2×2632981² = 13865177892722, which contains 22 as substring.

2632981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2632901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4081 + ... + 4681.

It is an arithmetic number, because the mean of its divisors is an integer number (356083).

2^2632981 is an apocalyptic number.

It is an amenable number.

2632981 is a deficient number, since it is larger than the sum of its proper divisors (215683).

2632981 is a wasteful number, since it uses less digits than its factorization.

2632981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951.

The product of its digits is 5184, while the sum is 31.

The square root of 2632981 is about 1622.6462954076. The cubic root of 2632981 is about 138.0858703817.

The spelling of 2632981 in words is "two million, six hundred thirty-two thousand, nine hundred eighty-one".