69997500 has 240 divisors, whose sum is σ = 244046880. Its totient is φ = 17280000.

The previous prime is 69997457. The next prime is 69997531. The reversal of 69997500 is 579996.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1147470 + ... + 1147530.

It is an arithmetic number, because the mean of its divisors is an integer number (1016862).

Almost surely, 2^69997500 is an apocalyptic number.

69997500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69997500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122023440).

69997500 is an abundant number, since it is smaller than the sum of its proper divisors (174049380).

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

69997500 is a wasteful number, since it uses less digits than its factorization.

69997500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 69997500 is about 8366.4508604306. The cubic root of 69997500 is about 412.1236236304.

The spelling of 69997500 in words is "sixty-nine million, nine hundred ninety-seven thousand, five hundred".