76620047 has 4 divisors (see below), whose sum is σ = 87565776. Its totient is φ = 65674320.

The previous prime is 76620043. The next prime is 76620067. The reversal of 76620047 is 74002667.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74002667 = 2687 ⋅27541.

It is a cyclic number.

It is not a de Polignac number, because 76620047 - 2² = 76620043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76619995 and 76620022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76620041) 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, 5472854 + ... + 5472867.

It is an arithmetic number, because the mean of its divisors is an integer number (21891444).

Almost surely, 2^76620047 is an apocalyptic number.

76620047 is a deficient number, since it is larger than the sum of its proper divisors (10945729).

76620047 is a wasteful number, since it uses less digits than its factorization.

76620047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10945728.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 76620047 is about 8753.2877823136. The cubic root of 76620047 is about 424.7311739394.

The spelling of 76620047 in words is "seventy-six million, six hundred twenty thousand, forty-seven".