30877965 has 12 divisors (see below), whose sum is σ = 53521884. Its totient is φ = 16468224.

The previous prime is 30877939. The next prime is 30877981. The reversal of 30877965 is 56977803.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5294601 + 25583364 = 2301^2 + 5058^2 .

It is not a de Polignac number, because 30877965 - 2⁹ = 30877453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 686177 = 30877965 / (3 + 0 + 8 + 7 + 7 + 9 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 30877965.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343044 + ... + 343133.

It is an arithmetic number, because the mean of its divisors is an integer number (4460157).

Almost surely, 2^30877965 is an apocalyptic number.

It is an amenable number.

30877965 is a deficient number, since it is larger than the sum of its proper divisors (22643919).

30877965 is a wasteful number, since it uses less digits than its factorization.

30877965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686188 (or 686185 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 30877965 is about 5556.7944896316. The cubic root of 30877965 is about 313.7253098246.

The spelling of 30877965 in words is "thirty million, eight hundred seventy-seven thousand, nine hundred sixty-five".