109640061 has 10 divisors (see below), whose sum is σ = 163783422. Its totient is φ = 73093320.

The previous prime is 109640059. The next prime is 109640099. The reversal of 109640061 is 160046901.

109640061 is a `hidden beast` number, since 10 + 9 + 640 + 0 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 85932900 + 23707161 = 9270^2 + 4869^2 .

It is not a de Polignac number, because 109640061 - 2¹ = 109640059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109640161) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 676710 + ... + 676871.

Almost surely, 2^109640061 is an apocalyptic number.

It is an amenable number.

109640061 is a deficient number, since it is larger than the sum of its proper divisors (54143361).

109640061 is an equidigital number, since it uses as much as digits as its factorization.

109640061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353593 (or 1353584 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 109640061 is about 10470.9150029976. The cubic root of 109640061 is about 478.6188028631.

Adding to 109640061 its reverse (160046901), we get a palindrome (269686962).

The spelling of 109640061 in words is "one hundred nine million, six hundred forty thousand, sixty-one".