74157771 has 8 divisors (see below), whose sum is σ = 99050704. Its totient is φ = 49351680.

The previous prime is 74157763. The next prime is 74157781. The reversal of 74157771 is 17775147.

It is a happy number.

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

It is not a de Polignac number, because 74157771 - 2³ = 74157763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74157701) 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, 19690 + ... + 23151.

It is an arithmetic number, because the mean of its divisors is an integer number (12381338).

Almost surely, 2^74157771 is an apocalyptic number.

74157771 is a deficient number, since it is larger than the sum of its proper divisors (24892933).

74157771 is a wasteful number, since it uses less digits than its factorization.

74157771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43421.

The product of its digits is 48020, while the sum is 39.

The square root of 74157771 is about 8611.4906375145. The cubic root of 74157771 is about 420.1318010386.

The spelling of 74157771 in words is "seventy-four million, one hundred fifty-seven thousand, seven hundred seventy-one".