78873001 has 4 divisors (see below), whose sum is σ = 79402500. Its totient is φ = 78343504.

The previous prime is 78872993. The next prime is 78873007. The reversal of 78873001 is 10037887.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10037887 = 293 ⋅34259.

It can be written as a sum of positive squares in 2 ways, for example, as 4309776 + 74563225 = 2076^2 + 8635^2 .

It is a cyclic number.

It is not a de Polignac number, because 78873001 - 2³ = 78872993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78873007) 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, 264526 + ... + 264823.

It is an arithmetic number, because the mean of its divisors is an integer number (19850625).

Almost surely, 2^78873001 is an apocalyptic number.

It is an amenable number.

78873001 is a deficient number, since it is larger than the sum of its proper divisors (529499).

78873001 is a wasteful number, since it uses less digits than its factorization.

78873001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529498.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 78873001 is about 8881.0472918457. The cubic root of 78873001 is about 428.8539900814.

The spelling of 78873001 in words is "seventy-eight million, eight hundred seventy-three thousand, one".