61533673 has 2 divisors, whose sum is σ = 61533674. Its totient is φ = 61533672.

The previous prime is 61533649. The next prime is 61533683. The reversal of 61533673 is 37633516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53626329 + 7907344 = 7323^2 + 2812^2 .

It is a cyclic number.

It is not a de Polignac number, because 61533673 - 2⁹ = 61533161 is a prime.

It is not a weakly prime, because it can be changed into another prime (61533613) 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, 30766836 + 30766837.

It is an arithmetic number, because the mean of its divisors is an integer number (30766837).

Almost surely, 2^61533673 is an apocalyptic number.

It is an amenable number.

61533673 is a deficient number, since it is larger than the sum of its proper divisors (1).

61533673 is an equidigital number, since it uses as much as digits as its factorization.

61533673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 34.

The square root of 61533673 is about 7844.3401889515. The cubic root of 61533673 is about 394.7943660751.

The spelling of 61533673 in words is "sixty-one million, five hundred thirty-three thousand, six hundred seventy-three".