74220061 has 4 divisors (see below), whose sum is σ = 78126400. Its totient is φ = 70313724.

The previous prime is 74220043. The next prime is 74220071. The reversal of 74220061 is 16002247.

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: 16002247 = 839 ⋅19073.

It is a cyclic number.

It is not a de Polignac number, because 74220061 - 2²⁵ = 40665629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74220001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1953141 + ... + 1953178.

It is an arithmetic number, because the mean of its divisors is an integer number (19531600).

Almost surely, 2^74220061 is an apocalyptic number.

It is an amenable number.

74220061 is a deficient number, since it is larger than the sum of its proper divisors (3906339).

74220061 is a wasteful number, since it uses less digits than its factorization.

74220061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906338.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 74220061 is about 8615.1065576695. The cubic root of 74220061 is about 420.2494002492.

The spelling of 74220061 in words is "seventy-four million, two hundred twenty thousand, sixty-one".