61690303 has 2 divisors, whose sum is σ = 61690304. Its totient is φ = 61690302.

The previous prime is 61690249. The next prime is 61690313. The reversal of 61690303 is 30309616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61690303 - 2¹³ = 61682111 is a 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 (61690313) 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, 30845151 + 30845152.

It is an arithmetic number, because the mean of its divisors is an integer number (30845152).

Almost surely, 2^61690303 is an apocalyptic number.

61690303 is a deficient number, since it is larger than the sum of its proper divisors (1).

61690303 is an equidigital number, since it uses as much as digits as its factorization.

61690303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 61690303 is about 7854.3174751216. The cubic root of 61690303 is about 395.1290567984.

Adding to 61690303 its reverse (30309616), we get a palindrome (91999919).

The spelling of 61690303 in words is "sixty-one million, six hundred ninety thousand, three hundred three".