74600381 has 2 divisors, whose sum is σ = 74600382. Its totient is φ = 74600380.

The previous prime is 74600371. The next prime is 74600419. The reversal of 74600381 is 18300647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71740900 + 2859481 = 8470^2 + 1691^2 .

It is an emirp because it is prime and its reverse (18300647) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74600381 is a prime.

It is a super-2 number, since 2×74600381² = 11130433690690322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74600311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37300190 + 37300191.

It is an arithmetic number, because the mean of its divisors is an integer number (37300191).

Almost surely, 2^74600381 is an apocalyptic number.

It is an amenable number.

74600381 is a deficient number, since it is larger than the sum of its proper divisors (1).

74600381 is an equidigital number, since it uses as much as digits as its factorization.

74600381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 74600381 is about 8637.1512085872. The cubic root of 74600381 is about 420.9659945866.

The spelling of 74600381 in words is "seventy-four million, six hundred thousand, three hundred eighty-one".