61634927 has 2 divisors, whose sum is σ = 61634928. Its totient is φ = 61634926.

The previous prime is 61634897. The next prime is 61634929. The reversal of 61634927 is 72943616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61634927 - 2⁶ = 61634863 is a prime.

Together with 61634929, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61634929) 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 as a sum of consecutive naturals, namely, 30817463 + 30817464.

It is an arithmetic number, because the mean of its divisors is an integer number (30817464).

Almost surely, 2^61634927 is an apocalyptic number.

61634927 is a deficient number, since it is larger than the sum of its proper divisors (1).

61634927 is an equidigital number, since it uses as much as digits as its factorization.

61634927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 61634927 is about 7850.7914887609. The cubic root of 61634927 is about 395.0107928472.

The spelling of 61634927 in words is "sixty-one million, six hundred thirty-four thousand, nine hundred twenty-seven".