73640851 has 2 divisors, whose sum is σ = 73640852. Its totient is φ = 73640850.

The previous prime is 73640803. The next prime is 73640873. The reversal of 73640851 is 15804637.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73640851 - 2¹³ = 73632659 is a prime.

It is not a weakly prime, because it can be changed into another prime (73640881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36820425 + 36820426.

It is an arithmetic number, because the mean of its divisors is an integer number (36820426).

Almost surely, 2^73640851 is an apocalyptic number.

73640851 is a deficient number, since it is larger than the sum of its proper divisors (1).

73640851 is an equidigital number, since it uses as much as digits as its factorization.

73640851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 73640851 is about 8581.4247651541. The cubic root of 73640851 is about 419.1533416490.

The spelling of 73640851 in words is "seventy-three million, six hundred forty thousand, eight hundred fifty-one".