85663469 has 8 divisors (see below), whose sum is σ = 87725568. Its totient is φ = 83611440.

The previous prime is 85663463. The next prime is 85663471. The reversal of 85663469 is 96436658.

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

It is a cyclic number.

It is not a de Polignac number, because 85663469 - 2⁸ = 85663213 is a prime.

It is a super-2 number, since 2×85663469² = 14676459842227922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85663463) 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, 16364 + ... + 20954.

It is an arithmetic number, because the mean of its divisors is an integer number (10965696).

Almost surely, 2^85663469 is an apocalyptic number.

It is an amenable number.

85663469 is a deficient number, since it is larger than the sum of its proper divisors (2062099).

85663469 is a wasteful number, since it uses less digits than its factorization.

85663469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5035.

The product of its digits is 933120, while the sum is 47.

The square root of 85663469 is about 9255.4561746032. The cubic root of 85663469 is about 440.8239879793.

The spelling of 85663469 in words is "eighty-five million, six hundred sixty-three thousand, four hundred sixty-nine".