74606381 has 2 divisors, whose sum is σ = 74606382. Its totient is φ = 74606380.

The previous prime is 74606339. The next prime is 74606401. The reversal of 74606381 is 18360647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43626025 + 30980356 = 6605^2 + 5566^2 .

It is a cyclic number.

It is not a de Polignac number, because 74606381 - 2⁶ = 74606317 is a prime.

It is a super-2 number, since 2×74606381² = 11132224171834322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74606281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37303190 + 37303191.

It is an arithmetic number, because the mean of its divisors is an integer number (37303191).

Almost surely, 2^74606381 is an apocalyptic number.

It is an amenable number.

74606381 is a deficient number, since it is larger than the sum of its proper divisors (1).

74606381 is an equidigital number, since it uses as much as digits as its factorization.

74606381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 74606381 is about 8637.4985383501. The cubic root of 74606381 is about 420.9772801780.

The spelling of 74606381 in words is "seventy-four million, six hundred six thousand, three hundred eighty-one".