74156801 has 2 divisors, whose sum is σ = 74156802. Its totient is φ = 74156800.

The previous prime is 74156783. The next prime is 74156809. The reversal of 74156801 is 10865147.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53217025 + 20939776 = 7295^2 + 4576^2 .

It is an emirp because it is prime and its reverse (10865147) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74156801 is a prime.

It is a super-2 number, since 2×74156801² = 10998462269107202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74156809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37078400 + 37078401.

It is an arithmetic number, because the mean of its divisors is an integer number (37078401).

Almost surely, 2^74156801 is an apocalyptic number.

It is an amenable number.

74156801 is a deficient number, since it is larger than the sum of its proper divisors (1).

74156801 is an equidigital number, since it uses as much as digits as its factorization.

74156801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 74156801 is about 8611.4343172319. The cubic root of 74156801 is about 420.1299692250.

The spelling of 74156801 in words is "seventy-four million, one hundred fifty-six thousand, eight hundred one".