16761973 has 2 divisors, whose sum is σ = 16761974. Its totient is φ = 16761972.

The previous prime is 16761961. The next prime is 16761977. The reversal of 16761973 is 37916761.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15665764 + 1096209 = 3958^2 + 1047^2 .

It is a cyclic number.

It is not a de Polignac number, because 16761973 - 2⁹ = 16761461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16761977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8380986 + 8380987.

It is an arithmetic number, because the mean of its divisors is an integer number (8380987).

Almost surely, 2^16761973 is an apocalyptic number.

It is an amenable number.

16761973 is a deficient number, since it is larger than the sum of its proper divisors (1).

16761973 is an equidigital number, since it uses as much as digits as its factorization.

16761973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 40.

The square root of 16761973 is about 4094.1388593940. The cubic root of 16761973 is about 255.9224466009.

The spelling of 16761973 in words is "sixteen million, seven hundred sixty-one thousand, nine hundred seventy-three".