61802011 has 2 divisors, whose sum is σ = 61802012. Its totient is φ = 61802010.

The previous prime is 61801991. The next prime is 61802063. The reversal of 61802011 is 11020816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61802011 - 2⁵ = 61801979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61802011.

It is not a weakly prime, because it can be changed into another prime (61802711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30901005 + 30901006.

It is an arithmetic number, because the mean of its divisors is an integer number (30901006).

Almost surely, 2^61802011 is an apocalyptic number.

61802011 is a deficient number, since it is larger than the sum of its proper divisors (1).

61802011 is an equidigital number, since it uses as much as digits as its factorization.

61802011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 61802011 is about 7861.4255068658. The cubic root of 61802011 is about 395.3674111758.

Adding to 61802011 its reverse (11020816), we get a palindrome (72822827).

The spelling of 61802011 in words is "sixty-one million, eight hundred two thousand, eleven".