77482817 has 4 divisors (see below), whose sum is σ = 81560880. Its totient is φ = 73404756.

The previous prime is 77482813. The next prime is 77482829. The reversal of 77482817 is 71828477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71828477 = 7 ⋅10261211.

It is a cyclic number.

It is not a de Polignac number, because 77482817 - 2² = 77482813 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77482813) 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, 2039003 + ... + 2039040.

It is an arithmetic number, because the mean of its divisors is an integer number (20390220).

Almost surely, 2^77482817 is an apocalyptic number.

It is an amenable number.

77482817 is a deficient number, since it is larger than the sum of its proper divisors (4078063).

77482817 is a wasteful number, since it uses less digits than its factorization.

77482817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078062.

The product of its digits is 175616, while the sum is 44.

The square root of 77482817 is about 8802.4324479089. The cubic root of 77482817 is about 426.3194372077.

The spelling of 77482817 in words is "seventy-seven million, four hundred eighty-two thousand, eight hundred seventeen".