76561545 has 16 divisors (see below), whose sum is σ = 128946240. Its totient is φ = 38683584.

The previous prime is 76561531. The next prime is 76561559. The reversal of 76561545 is 54516567.

It is an interprime number because it is at equal distance from previous prime (76561531) and next prime (76561559).

It is not a de Polignac number, because 76561545 - 2¹² = 76557449 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134034 + ... + 134603.

It is an arithmetic number, because the mean of its divisors is an integer number (8059140).

Almost surely, 2^76561545 is an apocalyptic number.

It is an amenable number.

76561545 is a deficient number, since it is larger than the sum of its proper divisors (52384695).

76561545 is a wasteful number, since it uses less digits than its factorization.

76561545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268664.

The product of its digits is 126000, while the sum is 39.

The square root of 76561545 is about 8749.9454284013. The cubic root of 76561545 is about 424.6230475382.

The spelling of 76561545 in words is "seventy-six million, five hundred sixty-one thousand, five hundred forty-five".