61046809 has 2 divisors, whose sum is σ = 61046810. Its totient is φ = 61046808.

The previous prime is 61046767. The next prime is 61046819. The reversal of 61046809 is 90864016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60886809 + 160000 = 7803^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 61046809 - 2¹¹ = 61044761 is a prime.

It is not a weakly prime, because it can be changed into another prime (61046819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30523404 + 30523405.

It is an arithmetic number, because the mean of its divisors is an integer number (30523405).

Almost surely, 2^61046809 is an apocalyptic number.

It is an amenable number.

61046809 is a deficient number, since it is larger than the sum of its proper divisors (1).

61046809 is an equidigital number, since it uses as much as digits as its factorization.

61046809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 61046809 is about 7813.2457404078. The cubic root of 61046809 is about 393.7503830012.

The spelling of 61046809 in words is "sixty-one million, forty-six thousand, eight hundred nine".