69900640 has 48 divisors (see below), whose sum is σ = 168276528. Its totient is φ = 27429376.

The previous prime is 69900637. The next prime is 69900661. The reversal of 69900640 is 4600996.

It is a junction number, because it is equal to n+sod(n) for n = 69900596 and 69900605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4359 + ... + 12601.

It is an arithmetic number, because the mean of its divisors is an integer number (3505761).

Almost surely, 2^69900640 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 69900640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84138264).

69900640 is an abundant number, since it is smaller than the sum of its proper divisors (98375888).

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

69900640 is a wasteful number, since it uses less digits than its factorization.

69900640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8311 (or 8303 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 69900640 is about 8360.6602610081. The cubic root of 69900640 is about 411.9334419770.

The spelling of 69900640 in words is "sixty-nine million, nine hundred thousand, six hundred forty".