61500726 has 48 divisors (see below), whose sum is σ = 152755200. Its totient is φ = 17517744.

The previous prime is 61500721. The next prime is 61500727. The reversal of 61500726 is 62700516.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61500726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61500721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59845 + ... + 60863.

It is an arithmetic number, because the mean of its divisors is an integer number (3182400).

Almost surely, 2^61500726 is an apocalyptic number.

61500726 is an abundant number, since it is smaller than the sum of its proper divisors (91254474).

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

61500726 is a wasteful number, since it uses less digits than its factorization.

61500726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 61500726 is about 7842.2398586118. The cubic root of 61500726 is about 394.7238918587.

It can be divided in two parts, 61500 and 726, that added together give a palindrome (62226).

The spelling of 61500726 in words is "sixty-one million, five hundred thousand, seven hundred twenty-six".