61747460 has 12 divisors (see below), whose sum is σ = 129669708. Its totient is φ = 24698976.

The previous prime is 61747459. The next prime is 61747463. The reversal of 61747460 is 6474716.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48888064 + 12859396 = 6992^2 + 3586^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61747460.

It is not an unprimeable number, because it can be changed into a prime (61747463) 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 in 3 ways as a sum of consecutive naturals, for example, 1543667 + ... + 1543706.

It is an arithmetic number, because the mean of its divisors is an integer number (10805809).

Almost surely, 2^61747460 is an apocalyptic number.

It is an amenable number.

61747460 is an abundant number, since it is smaller than the sum of its proper divisors (67922248).

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

61747460 is a wasteful number, since it uses less digits than its factorization.

61747460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087382 (or 3087380 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 61747460 is about 7857.9552047591. The cubic root of 61747460 is about 395.2510501483.

The spelling of 61747460 in words is "sixty-one million, seven hundred forty-seven thousand, four hundred sixty".