74722061 has 2 divisors, whose sum is σ = 74722062. Its totient is φ = 74722060.

The previous prime is 74722051. The next prime is 74722093. The reversal of 74722061 is 16022747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59752900 + 14969161 = 7730^2 + 3869^2 .

It is a cyclic number.

It is not a de Polignac number, because 74722061 - 2²² = 70527757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74722051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37361030 + 37361031.

It is an arithmetic number, because the mean of its divisors is an integer number (37361031).

Almost surely, 2^74722061 is an apocalyptic number.

It is an amenable number.

74722061 is a deficient number, since it is larger than the sum of its proper divisors (1).

74722061 is an equidigital number, since it uses as much as digits as its factorization.

74722061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 74722061 is about 8644.1923278002. The cubic root of 74722061 is about 421.1947481884.

The spelling of 74722061 in words is "seventy-four million, seven hundred twenty-two thousand, sixty-one".