61240394 has 4 divisors (see below), whose sum is σ = 91860594. Its totient is φ = 30620196.

The previous prime is 61240391. The next prime is 61240397. The reversal of 61240394 is 49304216.

61240394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61240391) and next prime (61240397).

It can be written as a sum of positive squares in only one way, i.e., 33814225 + 27426169 = 5815^2 + 5237^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61240391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15310097 + ... + 15310100.

Almost surely, 2^61240394 is an apocalyptic number.

61240394 is a deficient number, since it is larger than the sum of its proper divisors (30620200).

61240394 is a wasteful number, since it uses less digits than its factorization.

61240394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30620199.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 61240394 is about 7825.6241923568. The cubic root of 61240394 is about 394.1661499595.

The spelling of 61240394 in words is "sixty-one million, two hundred forty thousand, three hundred ninety-four".