85970437 has 8 divisors (see below), whose sum is σ = 98767872. Its totient is φ = 73302000.

The previous prime is 85970419. The next prime is 85970461. The reversal of 85970437 is 73407958.

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 a de Polignac number, because none of the positive numbers 2^k-85970437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85970393 and 85970402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85970537) 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, 30814 + ... + 33487.

It is an arithmetic number, because the mean of its divisors is an integer number (12345984).

Almost surely, 2^85970437 is an apocalyptic number.

It is an amenable number.

85970437 is a deficient number, since it is larger than the sum of its proper divisors (12797435).

85970437 is a wasteful number, since it uses less digits than its factorization.

85970437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64499.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 85970437 is about 9272.0244283544. The cubic root of 85970437 is about 441.3499124520.

The spelling of 85970437 in words is "eighty-five million, nine hundred seventy thousand, four hundred thirty-seven".