76406947 has 4 divisors (see below), whose sum is σ = 77702040. Its totient is φ = 75111856.

The previous prime is 76406927. The next prime is 76406987. The reversal of 76406947 is 74960467.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 76406947 - 2¹¹ = 76404899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76406927) 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, 647458 + ... + 647575.

It is an arithmetic number, because the mean of its divisors is an integer number (19425510).

Almost surely, 2^76406947 is an apocalyptic number.

76406947 is a deficient number, since it is larger than the sum of its proper divisors (1295093).

76406947 is a wasteful number, since it uses less digits than its factorization.

76406947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295092.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 76406947 is about 8741.1067377078. The cubic root of 76406947 is about 424.3370462174.

The spelling of 76406947 in words is "seventy-six million, four hundred six thousand, nine hundred forty-seven".