74247401 has 4 divisors (see below), whose sum is σ = 75142032. Its totient is φ = 73352772.

The previous prime is 74247391. The next prime is 74247409. The reversal of 74247401 is 10474247.

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: 10474247 = 7 ⋅1496321.

It is a cyclic number.

It is not a de Polignac number, because 74247401 - 2¹⁰ = 74246377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74247409) 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, 447191 + ... + 447356.

It is an arithmetic number, because the mean of its divisors is an integer number (18785508).

Almost surely, 2^74247401 is an apocalyptic number.

It is an amenable number.

74247401 is a deficient number, since it is larger than the sum of its proper divisors (894631).

74247401 is an equidigital number, since it uses as much as digits as its factorization.

74247401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894630.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 74247401 is about 8616.6931592114. The cubic root of 74247401 is about 420.3009955005.

The spelling of 74247401 in words is "seventy-four million, two hundred forty-seven thousand, four hundred one".