74115997 has 2 divisors, whose sum is σ = 74115998. Its totient is φ = 74115996.

The previous prime is 74115989. The next prime is 74116087. The reversal of 74115997 is 79951147.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37283236 + 36832761 = 6106^2 + 6069^2 .

It is a cyclic number.

It is not a de Polignac number, because 74115997 - 2³ = 74115989 is a prime.

It is a super-2 number, since 2×74115997² = 10986362022608018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74115917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37057998 + 37057999.

It is an arithmetic number, because the mean of its divisors is an integer number (37057999).

Almost surely, 2^74115997 is an apocalyptic number.

It is an amenable number.

74115997 is a deficient number, since it is larger than the sum of its proper divisors (1).

74115997 is an equidigital number, since it uses as much as digits as its factorization.

74115997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 43.

The square root of 74115997 is about 8609.0648156464. The cubic root of 74115997 is about 420.0528977214.

The spelling of 74115997 in words is "seventy-four million, one hundred fifteen thousand, nine hundred ninety-seven".