85420073 has 8 divisors (see below), whose sum is σ = 86338560. Its totient is φ = 84505680.

The previous prime is 85420039. The next prime is 85420079. The reversal of 85420073 is 37002458.

It is a happy number.

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 85420073 - 2¹² = 85415977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85420079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57818 + ... + 59276.

It is an arithmetic number, because the mean of its divisors is an integer number (10792320).

Almost surely, 2^85420073 is an apocalyptic number.

It is an amenable number.

85420073 is a deficient number, since it is larger than the sum of its proper divisors (918487).

85420073 is a wasteful number, since it uses less digits than its factorization.

85420073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 85420073 is about 9242.2980367439. The cubic root of 85420073 is about 440.4060868739.

The spelling of 85420073 in words is "eighty-five million, four hundred twenty thousand, seventy-three".