61506106 has 4 divisors (see below), whose sum is σ = 92259162. Its totient is φ = 30753052.

The previous prime is 61506103. The next prime is 61506131. The reversal of 61506106 is 60160516.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 60980481 + 525625 = 7809^2 + 725^2 .

It is not an unprimeable number, because it can be changed into a prime (61506103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15376525 + ... + 15376528.

Almost surely, 2^61506106 is an apocalyptic number.

61506106 is a deficient number, since it is larger than the sum of its proper divisors (30753056).

61506106 is a wasteful number, since it uses less digits than its factorization.

61506106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30753055.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 61506106 is about 7842.5828653576. The cubic root of 61506106 is about 394.7354014931.

The spelling of 61506106 in words is "sixty-one million, five hundred six thousand, one hundred six".