85720454 has 8 divisors (see below), whose sum is σ = 128697960. Its totient is φ = 42821136.

The previous prime is 85720447. The next prime is 85720493. The reversal of 85720454 is 45402758.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×85720454² = 14695992467932232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16724 + ... + 21239.

It is an arithmetic number, because the mean of its divisors is an integer number (16087245).

Almost surely, 2^85720454 is an apocalyptic number.

85720454 is a deficient number, since it is larger than the sum of its proper divisors (42977506).

85720454 is a wasteful number, since it uses less digits than its factorization.

85720454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39094.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 85720454 is about 9258.5341172348. The cubic root of 85720454 is about 440.9217145331.

The spelling of 85720454 in words is "eighty-five million, seven hundred twenty thousand, four hundred fifty-four".