7620166145 has 8 divisors (see below), whose sum is σ = 9159417960. Its totient is φ = 6085987200.

The previous prime is 7620166111. The next prime is 7620166157. The reversal of 7620166145 is 5416610267.

It can be written as a sum of positive squares in 4 ways, for example, as 1112355904 + 6507810241 = 33352^2 + 80671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7620166145 - 2²⁸ = 7351730689 is a prime.

It is a super-2 number, since 2×7620166145² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7620166099 and 7620166108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264910 + ... + 1270919.

It is an arithmetic number, because the mean of its divisors is an integer number (1144927245).

Almost surely, 2^7620166145 is an apocalyptic number.

It is an amenable number.

7620166145 is a deficient number, since it is larger than the sum of its proper divisors (1539251815).

7620166145 is a wasteful number, since it uses less digits than its factorization.

7620166145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536435.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 7620166145 is about 87293.5630215653. The cubic root of 7620166145 is about 1967.8325810806.

The spelling of 7620166145 in words is "seven billion, six hundred twenty million, one hundred sixty-six thousand, one hundred forty-five".