75621316 has 6 divisors (see below), whose sum is σ = 132337310. Its totient is φ = 37810656.

The previous prime is 75621313. The next prime is 75621347. The reversal of 75621316 is 61312657.

It can be written as a sum of positive squares in only one way, i.e., 75620416 + 900 = 8696^2 + 30^2 .

It is not an unprimeable number, because it can be changed into a prime (75621313) 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, 9452661 + ... + 9452668.

Almost surely, 2^75621316 is an apocalyptic number.

It is an amenable number.

75621316 is a deficient number, since it is larger than the sum of its proper divisors (56715994).

75621316 is a wasteful number, since it uses less digits than its factorization.

75621316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18905333 (or 18905331 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 75621316 is about 8696.0517477761. The cubic root of 75621316 is about 422.8776609883.

The spelling of 75621316 in words is "seventy-five million, six hundred twenty-one thousand, three hundred sixteen".