78324601 has 4 divisors (see below), whose sum is σ = 78424912. Its totient is φ = 78224292.

The previous prime is 78324553. The next prime is 78324613. The reversal of 78324601 is 10642387.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10642387 = 7 ⋅1520341.

It is a cyclic number.

It is not a de Polignac number, because 78324601 - 2¹⁷ = 78193529 is a prime.

It is a super-2 number, since 2×78324601² = 12269486243618402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78324101) 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, 48975 + ... + 50548.

It is an arithmetic number, because the mean of its divisors is an integer number (19606228).

Almost surely, 2^78324601 is an apocalyptic number.

It is an amenable number.

78324601 is a deficient number, since it is larger than the sum of its proper divisors (100311).

78324601 is an equidigital number, since it uses as much as digits as its factorization.

78324601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100310.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 78324601 is about 8850.1186997689. The cubic root of 78324601 is about 427.8577441606.

Adding to 78324601 its reverse (10642387), we get a palindrome (88966988).

The spelling of 78324601 in words is "seventy-eight million, three hundred twenty-four thousand, six hundred one".