65033661 has 16 divisors (see below), whose sum is σ = 108108288. Its totient is φ = 33783600.

The previous prime is 65033659. The next prime is 65033671. The reversal of 65033661 is 16633056.

It is not a de Polignac number, because 65033661 - 2¹ = 65033659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65033671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140535 + ... + 140996.

It is an arithmetic number, because the mean of its divisors is an integer number (6756768).

Almost surely, 2^65033661 is an apocalyptic number.

It is an amenable number.

65033661 is a deficient number, since it is larger than the sum of its proper divisors (43074627).

65033661 is a wasteful number, since it uses less digits than its factorization.

65033661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281552.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 65033661 is about 8064.3450447014. The cubic root of 65033661 is about 402.1419698557.

The spelling of 65033661 in words is "sixty-five million, thirty-three thousand, six hundred sixty-one".