61506606 has 32 divisors (see below), whose sum is σ = 143244288. Its totient is φ = 17241120.

The previous prime is 61506587. The next prime is 61506607. The reversal of 61506606 is 60660516.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61506607) 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, 11590 + ... + 16041.

It is an arithmetic number, because the mean of its divisors is an integer number (4476384).

Almost surely, 2^61506606 is an apocalyptic number.

61506606 is an abundant number, since it is smaller than the sum of its proper divisors (81737682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61506606 is a wasteful number, since it uses less digits than its factorization.

61506606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27696.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 61506606 is about 7842.6147425460. The cubic root of 61506606 is about 394.7364711276.

The spelling of 61506606 in words is "sixty-one million, five hundred six thousand, six hundred six".