78604001 has 4 divisors (see below), whose sum is σ = 89833152. Its totient is φ = 67374852.

The previous prime is 78603997. The next prime is 78604027. The reversal of 78604001 is 10040687.

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: 10040687 = 67 ⋅149861.

It is a cyclic number.

It is not a de Polignac number, because 78604001 - 2² = 78603997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78604081) 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, 5614565 + ... + 5614578.

It is an arithmetic number, because the mean of its divisors is an integer number (22458288).

Almost surely, 2^78604001 is an apocalyptic number.

It is an amenable number.

78604001 is a deficient number, since it is larger than the sum of its proper divisors (11229151).

78604001 is a wasteful number, since it uses less digits than its factorization.

78604001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11229150.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 78604001 is about 8865.8897466639. The cubic root of 78604001 is about 428.3658926769.

Adding to 78604001 its reverse (10040687), we get a palindrome (88644688).

The spelling of 78604001 in words is "seventy-eight million, six hundred four thousand, one".