61726736 has 10 divisors (see below), whose sum is σ = 119595582. Its totient is φ = 30863360.

The previous prime is 61726727. The next prime is 61726739. The reversal of 61726736 is 63762716.

It can be written as a sum of positive squares in only one way, i.e., 61716736 + 10000 = 7856^2 + 100^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61726736.

It is not an unprimeable number, because it can be changed into a prime (61726739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1928945 + ... + 1928976.

Almost surely, 2^61726736 is an apocalyptic number.

It is an amenable number.

61726736 is a deficient number, since it is larger than the sum of its proper divisors (57868846).

61726736 is a wasteful number, since it uses less digits than its factorization.

61726736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857929 (or 3857923 counting only the distinct ones).

The product of its digits is 63504, while the sum is 38.

The square root of 61726736 is about 7856.6364304326. The cubic root of 61726736 is about 395.2068264705.

The spelling of 61726736 in words is "sixty-one million, seven hundred twenty-six thousand, seven hundred thirty-six".