7461981 has 12 divisors (see below), whose sum is σ = 10886460. Its totient is φ = 4924800.

The previous prime is 7461943. The next prime is 7461983. The reversal of 7461981 is 1891647.

It can be written as a sum of positive squares in 2 ways, for example, as 3980025 + 3481956 = 1995^2 + 1866^2 .

It is not a de Polignac number, because 7461981 - 2⁹ = 7461469 is a prime.

It is a super-2 number, since 2×7461981² = 111362320888722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7461983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3196 + ... + 5013.

It is an arithmetic number, because the mean of its divisors is an integer number (907205).

Almost surely, 2^7461981 is an apocalyptic number.

It is an amenable number.

7461981 is a deficient number, since it is larger than the sum of its proper divisors (3424479).

7461981 is a wasteful number, since it uses less digits than its factorization.

7461981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8316 (or 8313 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 7461981 is about 2731.6626804933. The cubic root of 7461981 is about 195.4120674755.

The spelling of 7461981 in words is "seven million, four hundred sixty-one thousand, nine hundred eighty-one".