61840446 has 16 divisors (see below), whose sum is σ = 123930000. Its totient is φ = 20571968.

The previous prime is 61840409. The next prime is 61840447. The reversal of 61840446 is 64404816.

It is a super-2 number, since 2×61840446² = 7648481522957832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61840447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7071 + ... + 13178.

It is an arithmetic number, because the mean of its divisors is an integer number (7745625).

Almost surely, 2^61840446 is an apocalyptic number.

61840446 is an abundant number, since it is smaller than the sum of its proper divisors (62089554).

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

61840446 is a wasteful number, since it uses less digits than its factorization.

61840446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20763.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 61840446 is about 7863.8696581263. The cubic root of 61840446 is about 395.4493545578.

The spelling of 61840446 in words is "sixty-one million, eight hundred forty thousand, four hundred forty-six".