3077981 has 4 divisors (see below), whose sum is σ = 3240000. Its totient is φ = 2915964.

The previous prime is 3077953. The next prime is 3078001. The reversal of 3077981 is 1897703.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3077981 is a prime.

It is a super-2 number, since 2×3077981² = 18947934072722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3077951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80981 + ... + 81018.

It is an arithmetic number, because the mean of its divisors is an integer number (810000).

Almost surely, 2^3077981 is an apocalyptic number.

It is an amenable number.

3077981 is a deficient number, since it is larger than the sum of its proper divisors (162019).

3077981 is a wasteful number, since it uses less digits than its factorization.

3077981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162018.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 3077981 is about 1754.4175671715. The cubic root of 3077981 is about 145.4639282655.

The spelling of 3077981 in words is "three million, seventy-seven thousand, nine hundred eighty-one".