85651000 has 64 divisors (see below), whose sum is σ = 202718880. Its totient is φ = 33868800.

The previous prime is 85650997. The next prime is 85651037. The reversal of 85651000 is 15658.

85651000 = T₂₅ + T₂₆ + ... + T₈₀₀.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96559 + ... + 97441.

Almost surely, 2^85651000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85651000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101359440).

85651000 is an abundant number, since it is smaller than the sum of its proper divisors (117067880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85651000 is a wasteful number, since it uses less digits than its factorization.

85651000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 85651000 is about 9254.7825474184. The cubic root of 85651000 is about 440.8025984610.

Adding to 85651000 its reverse (15658), we get a palindrome (85666658).

The spelling of 85651000 in words is "eighty-five million, six hundred fifty-one thousand".