69485640 has 64 divisors (see below), whose sum is σ = 238239360. Its totient is φ = 15882240.

The previous prime is 69485639. The next prime is 69485671. The reversal of 69485640 is 4658496.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 69485592 and 69485601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40521 + ... + 42200.

It is an arithmetic number, because the mean of its divisors is an integer number (3722490).

Almost surely, 2^69485640 is an apocalyptic number.

69485640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

69485640 is an abundant number, since it is smaller than the sum of its proper divisors (168753720).

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

69485640 is a wasteful number, since it uses less digits than its factorization.

69485640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82742 (or 82738 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 69485640 is about 8335.8047002074. The cubic root of 69485640 is about 411.1166072365.

It can be divided in two parts, 69485 and 640, that added together give a triangular number (70125 = T₃₇₄).

The spelling of 69485640 in words is "sixty-nine million, four hundred eighty-five thousand, six hundred forty".