30761661 has 12 divisors (see below), whose sum is σ = 47712192. Its totient is φ = 17578008.

The previous prime is 30761659. The next prime is 30761699. The reversal of 30761661 is 16616703.

It is not a de Polignac number, because 30761661 - 2¹ = 30761659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30761611) 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, 104485 + ... + 104778.

It is an arithmetic number, because the mean of its divisors is an integer number (3976016).

Almost surely, 2^30761661 is an apocalyptic number.

It is an amenable number.

30761661 is a deficient number, since it is larger than the sum of its proper divisors (16950531).

30761661 is a wasteful number, since it uses less digits than its factorization.

30761661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209280 (or 209273 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 30761661 is about 5546.3195905032. The cubic root of 30761661 is about 313.3309248595.

The spelling of 30761661 in words is "thirty million, seven hundred sixty-one thousand, six hundred sixty-one".