69898464 has 144 divisors (see below), whose sum is σ = 210515760. Its totient is φ = 22809600.

The previous prime is 69898429. The next prime is 69898471. The reversal of 69898464 is 46489896.

69898464 is a `hidden beast` number, since 6 + 98 + 98 + 464 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 69898464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 692014 + ... + 692114.

It is an arithmetic number, because the mean of its divisors is an integer number (1461915).

Almost surely, 2^69898464 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 69898464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105257880).

69898464 is an abundant number, since it is smaller than the sum of its proper divisors (140617296).

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

69898464 is a wasteful number, since it uses less digits than its factorization.

69898464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 195 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 69898464 is about 8360.5301267324. The cubic root of 69898464 is about 411.9291674503.

The spelling of 69898464 in words is "sixty-nine million, eight hundred ninety-eight thousand, four hundred sixty-four".