76620233 has 4 divisors (see below), whose sum is σ = 79262340. Its totient is φ = 73978128.

The previous prime is 76620227. The next prime is 76620253. The reversal of 76620233 is 33202667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33202667 = 3061 ⋅10847.

It can be written as a sum of positive squares in 2 ways, for example, as 43072969 + 33547264 = 6563^2 + 5792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76620233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 2642077 = 76620233 / (7 + 6 + 6 + 2 + 0 + 2 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76620196 and 76620205.

It is not an unprimeable number, because it can be changed into a prime (76620253) 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, 1321010 + ... + 1321067.

It is an arithmetic number, because the mean of its divisors is an integer number (19815585).

Almost surely, 2^76620233 is an apocalyptic number.

It is an amenable number.

76620233 is a deficient number, since it is larger than the sum of its proper divisors (2642107).

76620233 is a wasteful number, since it uses less digits than its factorization.

76620233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642106.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 76620233 is about 8753.2984068864. The cubic root of 76620233 is about 424.7315176264.

The spelling of 76620233 in words is "seventy-six million, six hundred twenty thousand, two hundred thirty-three".