76673521 has 2 divisors, whose sum is σ = 76673522. Its totient is φ = 76673520.

The previous prime is 76673503. The next prime is 76673533. The reversal of 76673521 is 12537667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50253921 + 26419600 = 7089^2 + 5140^2 .

It is a cyclic number.

It is not a de Polignac number, because 76673521 - 2¹⁹ = 76149233 is a prime.

It is not a weakly prime, because it can be changed into another prime (76673501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38336760 + 38336761.

It is an arithmetic number, because the mean of its divisors is an integer number (38336761).

Almost surely, 2^76673521 is an apocalyptic number.

It is an amenable number.

76673521 is a deficient number, since it is larger than the sum of its proper divisors (1).

76673521 is an equidigital number, since it uses as much as digits as its factorization.

76673521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 76673521 is about 8756.3417589767. The cubic root of 76673521 is about 424.8299591967.

The spelling of 76673521 in words is "seventy-six million, six hundred seventy-three thousand, five hundred twenty-one".