61909106 has 16 divisors (see below), whose sum is σ = 111716160. Its totient is φ = 25135920.

The previous prime is 61909093. The next prime is 61909109. The reversal of 61909106 is 60190916.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61909109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116105 + ... + 116636.

It is an arithmetic number, because the mean of its divisors is an integer number (6982260).

Almost surely, 2^61909106 is an apocalyptic number.

61909106 is a deficient number, since it is larger than the sum of its proper divisors (49807054).

61909106 is a wasteful number, since it uses less digits than its factorization.

61909106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232769.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 61909106 is about 7868.2339822860. The cubic root of 61909106 is about 395.5956531485.

It can be divided in two parts, 6190910 and 6, that added together give a palindrome (6190916).

The spelling of 61909106 in words is "sixty-one million, nine hundred nine thousand, one hundred six".