74782061 has 2 divisors, whose sum is σ = 74782062. Its totient is φ = 74782060.

The previous prime is 74782051. The next prime is 74782079. The reversal of 74782061 is 16028747.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71149225 + 3632836 = 8435^2 + 1906^2 .

It is a cyclic number.

It is not a de Polignac number, because 74782061 - 2¹⁰ = 74781037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74782051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37391030 + 37391031.

It is an arithmetic number, because the mean of its divisors is an integer number (37391031).

Almost surely, 2^74782061 is an apocalyptic number.

It is an amenable number.

74782061 is a deficient number, since it is larger than the sum of its proper divisors (1).

74782061 is an equidigital number, since it uses as much as digits as its factorization.

74782061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 74782061 is about 8647.6621696271. The cubic root of 74782061 is about 421.3074544110.

The spelling of 74782061 in words is "seventy-four million, seven hundred eighty-two thousand, sixty-one".