76909540 has 12 divisors (see below), whose sum is σ = 161510076. Its totient is φ = 30763808.

The previous prime is 76909517. The next prime is 76909559. The reversal of 76909540 is 4590967.

It can be written as a sum of positive squares in 2 ways, for example, as 47554816 + 29354724 = 6896^2 + 5418^2 .

It is a super-3 number, since 3×76909540³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76909493 and 76909502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1922719 + ... + 1922758.

It is an arithmetic number, because the mean of its divisors is an integer number (13459173).

Almost surely, 2^76909540 is an apocalyptic number.

It is an amenable number.

76909540 is an abundant number, since it is smaller than the sum of its proper divisors (84600536).

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

76909540 is a wasteful number, since it uses less digits than its factorization.

76909540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3845486 (or 3845484 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 76909540 is about 8769.8084357641. The cubic root of 76909540 is about 425.2654212863.

The spelling of 76909540 in words is "seventy-six million, nine hundred nine thousand, five hundred forty".