75663001 has 4 divisors (see below), whose sum is σ = 78272100. Its totient is φ = 73053904.

The previous prime is 75662989. The next prime is 75663019. The reversal of 75663001 is 10036657.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10036657 = 37 ⋅271261.

It can be written as a sum of positive squares in 2 ways, for example, as 22080601 + 53582400 = 4699^2 + 7320^2 .

It is a cyclic number.

It is not a de Polignac number, because 75663001 - 2⁵ = 75662969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75663041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1304506 + ... + 1304563.

It is an arithmetic number, because the mean of its divisors is an integer number (19568025).

Almost surely, 2^75663001 is an apocalyptic number.

It is an amenable number.

75663001 is a deficient number, since it is larger than the sum of its proper divisors (2609099).

75663001 is a wasteful number, since it uses less digits than its factorization.

75663001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609098.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 75663001 is about 8698.4481949368. The cubic root of 75663001 is about 422.9553481548.

Adding to 75663001 its reverse (10036657), we get a palindrome (85699658).

The spelling of 75663001 in words is "seventy-five million, six hundred sixty-three thousand, one".