85671401 has 4 divisors (see below), whose sum is σ = 85910400. Its totient is φ = 85432404.

The previous prime is 85671371. The next prime is 85671431. The reversal of 85671401 is 10417658.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10417658 = 2 ⋅5208829.

It is an interprime number because it is at equal distance from previous prime (85671371) and next prime (85671431).

It is a cyclic number.

It is not a de Polignac number, because 85671401 - 2⁶ = 85671337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85671431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118961 + ... + 119678.

It is an arithmetic number, because the mean of its divisors is an integer number (21477600).

Almost surely, 2^85671401 is an apocalyptic number.

It is an amenable number.

85671401 is a deficient number, since it is larger than the sum of its proper divisors (238999).

85671401 is a wasteful number, since it uses less digits than its factorization.

85671401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238998.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 85671401 is about 9255.8846686851. The cubic root of 85671401 is about 440.8375935765.

The spelling of 85671401 in words is "eighty-five million, six hundred seventy-one thousand, four hundred one".