2463981 has 8 divisors (see below), whose sum is σ = 3538080. Its totient is φ = 1516272.

The previous prime is 2463971. The next prime is 2463983. The reversal of 2463981 is 1893642.

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

It is not a de Polignac number, because 2463981 - 2⁵ = 2463949 is a prime.

It is a super-2 number, since 2×2463981² = 12142404736722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

2463981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2463983) 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, 31551 + ... + 31628.

It is an arithmetic number, because the mean of its divisors is an integer number (442260).

2^2463981 is an apocalyptic number.

It is an amenable number.

2463981 is a deficient number, since it is larger than the sum of its proper divisors (1074099).

2463981 is a wasteful number, since it uses less digits than its factorization.

2463981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63195.

The product of its digits is 10368, while the sum is 33.

The square root of 2463981 is about 1569.7072975558. The cubic root of 2463981 is about 135.0659211659.

The spelling of 2463981 in words is "two million, four hundred sixty-three thousand, nine hundred eighty-one".