19674997 has 2 divisors, whose sum is σ = 19674998. Its totient is φ = 19674996.

The previous prime is 19674979. The next prime is 19675057. The reversal of 19674997 is 79947691.

Together with previous prime (19674979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19660356 + 14641 = 4434^2 + 121^2 .

It is a cyclic number.

It is not a de Polignac number, because 19674997 - 2¹¹ = 19672949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19674917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9837498 + 9837499.

It is an arithmetic number, because the mean of its divisors is an integer number (9837499).

Almost surely, 2^19674997 is an apocalyptic number.

It is an amenable number.

19674997 is a deficient number, since it is larger than the sum of its proper divisors (1).

19674997 is an equidigital number, since it uses as much as digits as its factorization.

19674997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 52.

The square root of 19674997 is about 4435.6506850743. The cubic root of 19674997 is about 269.9634015322.

The spelling of 19674997 in words is "nineteen million, six hundred seventy-four thousand, nine hundred ninety-seven".