7099981 has 8 divisors (see below), whose sum is σ = 8173760. Its totient is φ = 6041088.

The previous prime is 7099969. The next prime is 7099991. The reversal of 7099981 is 1899907.

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

It is a cyclic number.

It is not a de Polignac number, because 7099981 - 2⁵ = 7099949 is a prime.

It is a super-2 number, since 2×7099981² = 100819460400722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7099991) 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, 2676 + ... + 4621.

It is an arithmetic number, because the mean of its divisors is an integer number (1021720).

Almost surely, 2^7099981 is an apocalyptic number.

It is an amenable number.

7099981 is a deficient number, since it is larger than the sum of its proper divisors (1073779).

7099981 is a wasteful number, since it uses less digits than its factorization.

7099981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7443.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 7099981 is about 2664.5789536060. The cubic root of 7099981 is about 192.1995628315.

The spelling of 7099981 in words is "seven million, ninety-nine thousand, nine hundred eighty-one".