61990412 has 12 divisors (see below), whose sum is σ = 118345416. Its totient is φ = 28177440.

The previous prime is 61990403. The next prime is 61990417. The reversal of 61990412 is 21409916.

61990412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61990412² = 7685622359859488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61990417) 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 in 3 ways as a sum of consecutive naturals, for example, 704393 + ... + 704480.

It is an arithmetic number, because the mean of its divisors is an integer number (9862118).

Almost surely, 2^61990412 is an apocalyptic number.

It is an amenable number.

61990412 is a deficient number, since it is larger than the sum of its proper divisors (56355004).

61990412 is a wasteful number, since it uses less digits than its factorization.

61990412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408888 (or 1408886 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 61990412 is about 7873.3990118627. The cubic root of 61990412 is about 395.7687576234.

It can be divided in two parts, 619904 and 12, that added together give a palindrome (619916).

The spelling of 61990412 in words is "sixty-one million, nine hundred ninety thousand, four hundred twelve".