61820746 has 8 divisors (see below), whose sum is σ = 99864324. Its totient is φ = 28532640.

The previous prime is 61820723. The next prime is 61820749. The reversal of 61820746 is 64702816.

It can be written as a sum of positive squares in 2 ways, for example, as 56415121 + 5405625 = 7511^2 + 2325^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61820749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188835 + ... + 1188886.

Almost surely, 2^61820746 is an apocalyptic number.

61820746 is a deficient number, since it is larger than the sum of its proper divisors (38043578).

61820746 is a wasteful number, since it uses less digits than its factorization.

61820746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377736.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 61820746 is about 7862.6169943601. The cubic root of 61820746 is about 395.4073584200.

The spelling of 61820746 in words is "sixty-one million, eight hundred twenty thousand, seven hundred forty-six".