77672233 has 4 divisors (see below), whose sum is σ = 79478608. Its totient is φ = 75865860.

The previous prime is 77672207. The next prime is 77672281. The reversal of 77672233 is 33227677.

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 a de Polignac number, because none of the positive numbers 2^k-77672233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77672192 and 77672201.

It is not an unprimeable number, because it can be changed into a prime (77672293) 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, 903123 + ... + 903208.

It is an arithmetic number, because the mean of its divisors is an integer number (19869652).

Almost surely, 2^77672233 is an apocalyptic number.

It is an amenable number.

77672233 is a deficient number, since it is larger than the sum of its proper divisors (1806375).

77672233 is a wasteful number, since it uses less digits than its factorization.

77672233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806374.

The product of its digits is 74088, while the sum is 37.

The square root of 77672233 is about 8813.1851790371. The cubic root of 77672233 is about 426.6665507677. Note that the first 3 decimals are identical.

It can be divided in two parts, 7767 and 2233, that added together give a 4-th power (10000 = 10⁴).

The spelling of 77672233 in words is "seventy-seven million, six hundred seventy-two thousand, two hundred thirty-three".