627040397 has 2 divisors, whose sum is σ = 627040398. Its totient is φ = 627040396.

The previous prime is 627040367. The next prime is 627040399. The reversal of 627040397 is 793040726.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313785796 + 313254601 = 17714^2 + 17699^2 .

It is a cyclic number.

It is not a de Polignac number, because 627040397 - 2¹² = 627036301 is a prime.

Together with 627040399, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 627040397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (627040399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313520198 + 313520199.

It is an arithmetic number, because the mean of its divisors is an integer number (313520199).

Almost surely, 2^627040397 is an apocalyptic number.

It is an amenable number.

627040397 is a deficient number, since it is larger than the sum of its proper divisors (1).

627040397 is an equidigital number, since it uses as much as digits as its factorization.

627040397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 627040397 is about 25040.7746884956. The cubic root of 627040397 is about 855.9173706343.

The spelling of 627040397 in words is "six hundred twenty-seven million, forty thousand, three hundred ninety-seven".