74145601 has 4 divisors (see below), whose sum is σ = 74200000. Its totient is φ = 74091204.

The previous prime is 74145593. The next prime is 74145613. The reversal of 74145601 is 10654147.

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: 10654147 = 7 ⋅1522021.

It is a cyclic number.

It is not a de Polignac number, because 74145601 - 2³ = 74145593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74145601.

It is not an unprimeable number, because it can be changed into a prime (74145101) 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, 25101 + ... + 27898.

It is an arithmetic number, because the mean of its divisors is an integer number (18550000).

Almost surely, 2^74145601 is an apocalyptic number.

It is an amenable number.

74145601 is a deficient number, since it is larger than the sum of its proper divisors (54399).

74145601 is a wasteful number, since it uses less digits than its factorization.

74145601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54398.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 74145601 is about 8610.7839945036. The cubic root of 74145601 is about 420.1088172313.

Adding to 74145601 its reverse (10654147), we get a palindrome (84799748).

The spelling of 74145601 in words is "seventy-four million, one hundred forty-five thousand, six hundred one".