74156789 has 8 divisors (see below), whose sum is σ = 84896448. Its totient is φ = 63453600.

The previous prime is 74156783. The next prime is 74156801. The reversal of 74156789 is 98765147.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74156789 - 2⁴ = 74156773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74156783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4607 + ... + 13020.

It is an arithmetic number, because the mean of its divisors is an integer number (10612056).

Almost surely, 2^74156789 is an apocalyptic number.

It is an amenable number.

74156789 is a deficient number, since it is larger than the sum of its proper divisors (10739659).

74156789 is a wasteful number, since it uses less digits than its factorization.

74156789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18235.

The product of its digits is 423360, while the sum is 47.

The square root of 74156789 is about 8611.4336204839. The cubic root of 74156789 is about 420.1299465633.

The spelling of 74156789 in words is "seventy-four million, one hundred fifty-six thousand, seven hundred eighty-nine".