1623680746 has 16 divisors (see below), whose sum is σ = 2470542984. Its totient is φ = 800181504.

The previous prime is 1623680743. The next prime is 1623680749. The reversal of 1623680746 is 6470863261.

It is an interprime number because it is at equal distance from previous prime (1623680743) and next prime (1623680749).

It can be written as a sum of positive squares in 4 ways, for example, as 1107891225 + 515789521 = 33285^2 + 22711^2 .

It is a super-2 number, since 2×1623680746² = 5272678329862233032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1623680741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297030 + ... + 302446.

Almost surely, 2^1623680746 is an apocalyptic number.

1623680746 is a deficient number, since it is larger than the sum of its proper divisors (846862238).

1623680746 is a wasteful number, since it uses less digits than its factorization.

1623680746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7545.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 1623680746 is about 40294.9220870323. The cubic root of 1623680746 is about 1175.3491030886.

The spelling of 1623680746 in words is "one billion, six hundred twenty-three million, six hundred eighty thousand, seven hundred forty-six".