78623001 has 16 divisors (see below), whose sum is σ = 116622720. Its totient is φ = 52350480.

The previous prime is 78622991. The next prime is 78623003. The reversal of 78623001 is 10032687.

It is not a de Polignac number, because 78623001 - 2⁶ = 78622937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78623003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31831 + ... + 34211.

It is an arithmetic number, because the mean of its divisors is an integer number (7288920).

Almost surely, 2^78623001 is an apocalyptic number.

It is an amenable number.

78623001 is a deficient number, since it is larger than the sum of its proper divisors (37999719).

78623001 is a wasteful number, since it uses less digits than its factorization.

78623001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613 (or 3607 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 78623001 is about 8866.9612043811. The cubic root of 78623001 is about 428.4004044751.

Adding to 78623001 its reverse (10032687), we get a palindrome (88655688).

The spelling of 78623001 in words is "seventy-eight million, six hundred twenty-three thousand, one".