73970971 has 4 divisors (see below), whose sum is σ = 77864200. Its totient is φ = 70077744.

The previous prime is 73970969. The next prime is 73970983. The reversal of 73970971 is 17907937.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73970971 - 2¹ = 73970969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73970471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1946586 + ... + 1946623.

It is an arithmetic number, because the mean of its divisors is an integer number (19466050).

Almost surely, 2^73970971 is an apocalyptic number.

73970971 is a deficient number, since it is larger than the sum of its proper divisors (3893229).

73970971 is a wasteful number, since it uses less digits than its factorization.

73970971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893228.

The product of its (nonzero) digits is 83349, while the sum is 43.

The square root of 73970971 is about 8600.6378251848. The cubic root of 73970971 is about 419.7787402238.

The spelling of 73970971 in words is "seventy-three million, nine hundred seventy thousand, nine hundred seventy-one".