69898985 has 36 divisors (see below), whose sum is σ = 97556004. Its totient is φ = 47784960.

The previous prime is 69898981. The next prime is 69898991. The reversal of 69898985 is 58989896.

It is a happy number.

It can be written as a sum of positive squares in 18 ways, for example, as 66846976 + 3052009 = 8176^2 + 1747^2 .

It is not a de Polignac number, because 69898985 - 2² = 69898981 is a prime.

It is an alternating number because its digits alternate between even and odd.

Its product of digits (11197440) is a multiple of the sum of its prime divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69898981) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1145855 + ... + 1145915.

It is an arithmetic number, because the mean of its divisors is an integer number (2709889).

Almost surely, 2^69898985 is an apocalyptic number.

69898985 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

69898985 is a deficient number, since it is larger than the sum of its proper divisors (27657019).

69898985 is a wasteful number, since it uses less digits than its factorization.

69898985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 96 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 62.

The square root of 69898985 is about 8360.5612849856. The cubic root of 69898985 is about 411.9301909089.

The spelling of 69898985 in words is "sixty-nine million, eight hundred ninety-eight thousand, nine hundred eighty-five".