61304290 has 8 divisors (see below), whose sum is σ = 110347740. Its totient is φ = 24521712.

The previous prime is 61304219. The next prime is 61304303. The reversal of 61304290 is 9240316.

It can be written as a sum of positive squares in 2 ways, for example, as 60388441 + 915849 = 7771^2 + 957^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3065205 + ... + 3065224.

Almost surely, 2^61304290 is an apocalyptic number.

61304290 is a deficient number, since it is larger than the sum of its proper divisors (49043450).

61304290 is a wasteful number, since it uses less digits than its factorization.

61304290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130436.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 61304290 is about 7829.7056138785. The cubic root of 61304290 is about 394.3031885190.

The spelling of 61304290 in words is "sixty-one million, three hundred four thousand, two hundred ninety".