85671651 has 8 divisors (see below), whose sum is σ = 123015760. Its totient is φ = 52720992.

The previous prime is 85671637. The next prime is 85671671. The reversal of 85671651 is 15617658.

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

It is not a de Polignac number, because 85671651 - 2⁶ = 85671587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2196709 = 85671651 / (8 + 5 + 6 + 7 + 1 + 6 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85671671) 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, 1098316 + ... + 1098393.

It is an arithmetic number, because the mean of its divisors is an integer number (15376970).

Almost surely, 2^85671651 is an apocalyptic number.

85671651 is a deficient number, since it is larger than the sum of its proper divisors (37344109).

85671651 is a wasteful number, since it uses less digits than its factorization.

85671651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196725.

The product of its digits is 50400, while the sum is 39.

The square root of 85671651 is about 9255.8981735972. The cubic root of 85671651 is about 440.8380223827.

The spelling of 85671651 in words is "eighty-five million, six hundred seventy-one thousand, six hundred fifty-one".