7998001 has 8 divisors (see below), whose sum is σ = 8748864. Its totient is φ = 7251120.

The previous prime is 7997989. The next prime is 7998013. The reversal of 7998001 is 1008997.

It is an interprime number because it is at equal distance from previous prime (7997989) and next prime (7998013).

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

It is a cyclic number.

It is not a de Polignac number, because 7998001 - 2⁹ = 7997489 is a prime.

It is a pancake number, because a pancake can be divided into 7998001 parts by 3999 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7998061) 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, 4611 + ... + 6103.

It is an arithmetic number, because the mean of its divisors is an integer number (1093608).

Almost surely, 2^7998001 is an apocalyptic number.

It is an amenable number.

7998001 is a deficient number, since it is larger than the sum of its proper divisors (750863).

7998001 is a wasteful number, since it uses less digits than its factorization.

7998001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 7998001 is about 2828.0737260545. The cubic root of 7998001 is about 199.9833402790.

The spelling of 7998001 in words is "seven million, nine hundred ninety-eight thousand, one".