619696997 has 2 divisors, whose sum is σ = 619696998. Its totient is φ = 619696996.

The previous prime is 619696949. The next prime is 619697011. The reversal of 619696997 is 799696916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 575952001 + 43744996 = 23999^2 + 6614^2 .

It is a cyclic number.

It is not a de Polignac number, because 619696997 - 2⁶ = 619696933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (619696697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309848498 + 309848499.

It is an arithmetic number, because the mean of its divisors is an integer number (309848499).

Almost surely, 2^619696997 is an apocalyptic number.

It is an amenable number.

619696997 is a deficient number, since it is larger than the sum of its proper divisors (1).

619696997 is an equidigital number, since it uses as much as digits as its factorization.

619696997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9920232, while the sum is 62.

The square root of 619696997 is about 24893.7140057485. The cubic root of 619696997 is about 852.5629664278.

The spelling of 619696997 in words is "six hundred nineteen million, six hundred ninety-six thousand, nine hundred ninety-seven".