61713730 has 48 divisors (see below), whose sum is σ = 122650920. Its totient is φ = 22356672.

The previous prime is 61713721. The next prime is 61713731. The reversal of 61713730 is 3731716.

It can be written as a sum of positive squares in 12 ways, for example, as 10634121 + 51079609 = 3261^2 + 7147^2 .

It is not an unprimeable number, because it can be changed into a prime (61713731) 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, 1164384 + ... + 1164436.

Almost surely, 2^61713730 is an apocalyptic number.

61713730 is a deficient number, since it is larger than the sum of its proper divisors (60937190).

61713730 is an equidigital number, since it uses as much as digits as its factorization.

61713730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 61713730 is about 7855.8086789331. The cubic root of 61713730 is about 395.1790674508.

The spelling of 61713730 in words is "sixty-one million, seven hundred thirteen thousand, seven hundred thirty".