7620166357 has 2 divisors, whose sum is σ = 7620166358. Its totient is φ = 7620166356.

The previous prime is 7620166349. The next prime is 7620166361. The reversal of 7620166357 is 7536610267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5497629316 + 2122537041 = 74146^2 + 46071^2 .

It is a cyclic number.

It is not a de Polignac number, because 7620166357 - 2³ = 7620166349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7620166387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3810083178 + 3810083179.

It is an arithmetic number, because the mean of its divisors is an integer number (3810083179).

Almost surely, 2^7620166357 is an apocalyptic number.

It is an amenable number.

7620166357 is a deficient number, since it is larger than the sum of its proper divisors (1).

7620166357 is an equidigital number, since it uses as much as digits as its factorization.

7620166357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 7620166357 is about 87293.5642358588. The cubic root of 7620166357 is about 1967.8325993295.

The spelling of 7620166357 in words is "seven billion, six hundred twenty million, one hundred sixty-six thousand, three hundred fifty-seven".