74946521 has 8 divisors (see below), whose sum is σ = 80802120. Its totient is φ = 69103872.

The previous prime is 74946479. The next prime is 74946533. The reversal of 74946521 is 12564947.

It can be written as a sum of positive squares in 4 ways, for example, as 15054400 + 59892121 = 3880^2 + 7739^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 74946521 - 2⁶ = 74946457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74946821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11201 + ... + 16593.

It is an arithmetic number, because the mean of its divisors is an integer number (10100265).

Almost surely, 2^74946521 is an apocalyptic number.

It is an amenable number.

74946521 is a deficient number, since it is larger than the sum of its proper divisors (5855599).

74946521 is a wasteful number, since it uses less digits than its factorization.

74946521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475.

The product of its digits is 60480, while the sum is 38.

The square root of 74946521 is about 8657.1658757355. The cubic root of 74946521 is about 421.6160734048.

The spelling of 74946521 in words is "seventy-four million, nine hundred forty-six thousand, five hundred twenty-one".