76509946 has 8 divisors (see below), whose sum is σ = 118722420. Its totient is φ = 36935808.

The previous prime is 76509931. The next prime is 76509947. The reversal of 76509946 is 64990567.

It can be written as a sum of positive squares in 2 ways, for example, as 73770921 + 2739025 = 8589^2 + 1655^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 76509896 and 76509905.

It is not an unprimeable number, because it can be changed into a prime (76509947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659511 + ... + 659626.

Almost surely, 2^76509946 is an apocalyptic number.

76509946 is a deficient number, since it is larger than the sum of its proper divisors (42212474).

76509946 is a wasteful number, since it uses less digits than its factorization.

76509946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319168.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 76509946 is about 8746.9963987645. The cubic root of 76509946 is about 424.5276338915.

The spelling of 76509946 in words is "seventy-six million, five hundred nine thousand, nine hundred forty-six".