74101987 has 2 divisors, whose sum is σ = 74101988. Its totient is φ = 74101986.

The previous prime is 74101981. The next prime is 74102027. The reversal of 74101987 is 78910147.

It is a weak prime.

It is an emirp because it is prime and its reverse (78910147) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74101987 - 2¹¹ = 74099939 is a prime.

It is a super-2 number, since 2×74101987² = 10982208954696338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74101981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37050993 + 37050994.

It is an arithmetic number, because the mean of its divisors is an integer number (37050994).

Almost surely, 2^74101987 is an apocalyptic number.

74101987 is a deficient number, since it is larger than the sum of its proper divisors (1).

74101987 is an equidigital number, since it uses as much as digits as its factorization.

74101987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 74101987 is about 8608.2510999622. The cubic root of 74101987 is about 420.0264287980.

The spelling of 74101987 in words is "seventy-four million, one hundred one thousand, nine hundred eighty-seven".