61656337 has 2 divisors, whose sum is σ = 61656338. Its totient is φ = 61656336.

The previous prime is 61656323. The next prime is 61656347. The reversal of 61656337 is 73365616.

61656337 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61324561 + 331776 = 7831^2 + 576^2 .

It is a cyclic number.

It is not a de Polignac number, because 61656337 - 2⁷ = 61656209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61656296 and 61656305.

It is not a weakly prime, because it can be changed into another prime (61656347) 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, 30828168 + 30828169.

It is an arithmetic number, because the mean of its divisors is an integer number (30828169).

Almost surely, 2^61656337 is an apocalyptic number.

It is an amenable number.

61656337 is a deficient number, since it is larger than the sum of its proper divisors (1).

61656337 is an equidigital number, since it uses as much as digits as its factorization.

61656337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 37.

The square root of 61656337 is about 7852.1549271522. The cubic root of 61656337 is about 395.0565255858.

It can be divided in two parts, 616 and 56337, that added together give a triangular number (56953 = T₃₃₇).

The spelling of 61656337 in words is "sixty-one million, six hundred fifty-six thousand, three hundred thirty-seven".