61604203 has 2 divisors, whose sum is σ = 61604204. Its totient is φ = 61604202.

The previous prime is 61604183. The next prime is 61604219. The reversal of 61604203 is 30240616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61604203 - 2⁵ = 61604171 is a prime.

It is not a weakly prime, because it can be changed into another prime (61604233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30802101 + 30802102.

It is an arithmetic number, because the mean of its divisors is an integer number (30802102).

Almost surely, 2^61604203 is an apocalyptic number.

61604203 is a deficient number, since it is larger than the sum of its proper divisors (1).

61604203 is an equidigital number, since it uses as much as digits as its factorization.

61604203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 61604203 is about 7848.8344994655. The cubic root of 61604203 is about 394.9451464714.

Adding to 61604203 its reverse (30240616), we get a palindrome (91844819).

The spelling of 61604203 in words is "sixty-one million, six hundred four thousand, two hundred three".