76847069 has 4 divisors (see below), whose sum is σ = 82758396. Its totient is φ = 70935744.

The previous prime is 76847051. The next prime is 76847081. The reversal of 76847069 is 96074867.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49420900 + 27426169 = 7030^2 + 5237^2 .

It is a cyclic number.

It is not a de Polignac number, because 76847069 - 2⁸ = 76846813 is a prime.

It is a super-2 number, since 2×76847069² = 11810944027781522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76847009) 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, 2955644 + ... + 2955669.

It is an arithmetic number, because the mean of its divisors is an integer number (20689599).

Almost surely, 2^76847069 is an apocalyptic number.

It is an amenable number.

76847069 is a deficient number, since it is larger than the sum of its proper divisors (5911327).

76847069 is a wasteful number, since it uses less digits than its factorization.

76847069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911326.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 76847069 is about 8766.2460038491. The cubic root of 76847069 is about 425.1502472239.

The spelling of 76847069 in words is "seventy-six million, eight hundred forty-seven thousand, sixty-nine".