69534540 has 36 divisors (see below), whose sum is σ = 210921984. Its totient is φ = 18542496.

The previous prime is 69534533. The next prime is 69534541. The reversal of 69534540 is 4543596.

It is a happy number.

69534540 is a `hidden beast` number, since 69 + 53 + 4 + 540 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 69534495 and 69534504.

It is not an unprimeable number, because it can be changed into a prime (69534541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192972 + ... + 193331.

It is an arithmetic number, because the mean of its divisors is an integer number (5858944).

Almost surely, 2^69534540 is an apocalyptic number.

69534540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

69534540 is an abundant number, since it is smaller than the sum of its proper divisors (141387444).

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

69534540 is a wasteful number, since it uses less digits than its factorization.

69534540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386318 (or 386313 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 69534540 is about 8338.7373144859. The cubic root of 69534540 is about 411.2130247026.

The spelling of 69534540 in words is "sixty-nine million, five hundred thirty-four thousand, five hundred forty".