76780133 has 4 divisors (see below), whose sum is σ = 76816608. Its totient is φ = 76743660.

The previous prime is 76780129. The next prime is 76780201. The reversal of 76780133 is 33108767.

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.

It is a cyclic number.

It is not a de Polignac number, because 76780133 - 2² = 76780129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76780093 and 76780102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76780103) 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, 14873 + ... + 19358.

It is an arithmetic number, because the mean of its divisors is an integer number (19204152).

Almost surely, 2^76780133 is an apocalyptic number.

It is an amenable number.

76780133 is a deficient number, since it is larger than the sum of its proper divisors (36475).

76780133 is a wasteful number, since it uses less digits than its factorization.

76780133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36474.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 76780133 is about 8762.4273463464. The cubic root of 76780133 is about 425.0267720159.

The spelling of 76780133 in words is "seventy-six million, seven hundred eighty thousand, one hundred thirty-three".