102645075 has 24 divisors (see below), whose sum is σ = 182762608. Its totient is φ = 50532480.

The previous prime is 102645071. The next prime is 102645089. The reversal of 102645075 is 570546201.

It is not a de Polignac number, because 102645075 - 2² = 102645071 is a prime.

It is a super-2 number, since 2×102645075² = 21072022843511250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102645071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51664 + ... + 53613.

Almost surely, 2^102645075 is an apocalyptic number.

102645075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102645075 is a deficient number, since it is larger than the sum of its proper divisors (80117533).

102645075 is a wasteful number, since it uses less digits than its factorization.

102645075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105303 (or 105298 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 102645075 is about 10131.3905758292. The cubic root of 102645075 is about 468.2157718230.

The spelling of 102645075 in words is "one hundred two million, six hundred forty-five thousand, seventy-five".