74769257 has 8 divisors (see below), whose sum is σ = 75558312. Its totient is φ = 73984000.

The previous prime is 74769229. The next prime is 74769263. The reversal of 74769257 is 75296747.

It can be written as a sum of positive squares in 4 ways, for example, as 23775376 + 50993881 = 4876^2 + 7141^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74769257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74769157) 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, 54257 + ... + 55617.

It is an arithmetic number, because the mean of its divisors is an integer number (9444789).

Almost surely, 2^74769257 is an apocalyptic number.

It is an amenable number.

74769257 is a deficient number, since it is larger than the sum of its proper divisors (789055).

74769257 is a wasteful number, since it uses less digits than its factorization.

74769257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899.

The product of its digits is 740880, while the sum is 47.

The square root of 74769257 is about 8646.9218222440. The cubic root of 74769257 is about 421.2834079643.

The spelling of 74769257 in words is "seventy-four million, seven hundred sixty-nine thousand, two hundred fifty-seven".