61904427 has 16 divisors (see below), whose sum is σ = 91757568. Its totient is φ = 36865440.

The previous prime is 61904411. The next prime is 61904461. The reversal of 61904427 is 72440916.

It is a happy number.

61904427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61904427 - 2⁴ = 61904411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61904407) 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 15 ways as a sum of consecutive naturals, for example, 24393 + ... + 26810.

It is an arithmetic number, because the mean of its divisors is an integer number (5734848).

Almost surely, 2^61904427 is an apocalyptic number.

61904427 is a deficient number, since it is larger than the sum of its proper divisors (29853141).

61904427 is a wasteful number, since it uses less digits than its factorization.

61904427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51250.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 61904427 is about 7867.9366418395. The cubic root of 61904427 is about 395.5856867165.

The spelling of 61904427 in words is "sixty-one million, nine hundred four thousand, four hundred twenty-seven".