78323601 has 4 divisors (see below), whose sum is σ = 104431472. Its totient is φ = 52215732.

The previous prime is 78323599. The next prime is 78323617. The reversal of 78323601 is 10632387.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 78323601 - 2¹ = 78323599 is a prime.

It is a super-2 number, since 2×78323601² = 12269172947214402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78303601) 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, 13053931 + ... + 13053936.

It is an arithmetic number, because the mean of its divisors is an integer number (26107868).

Almost surely, 2^78323601 is an apocalyptic number.

It is an amenable number.

78323601 is a deficient number, since it is larger than the sum of its proper divisors (26107871).

78323601 is a wasteful number, since it uses less digits than its factorization.

78323601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26107870.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 78323601 is about 8850.0622031712. The cubic root of 78323601 is about 427.8559232786.

Adding to 78323601 its reverse (10632387), we get a palindrome (88955988).

The spelling of 78323601 in words is "seventy-eight million, three hundred twenty-three thousand, six hundred one".