77673623 has 4 divisors (see below), whose sum is σ = 78474480. Its totient is φ = 76872768.

The previous prime is 77673613. The next prime is 77673643. The reversal of 77673623 is 32637677.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77673623 - 2¹⁰ = 77672599 is a prime.

It is a super-2 number, since 2×77673623² = 12066383419892258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77673613) 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, 400283 + ... + 400476.

It is an arithmetic number, because the mean of its divisors is an integer number (19618620).

Almost surely, 2^77673623 is an apocalyptic number.

77673623 is a deficient number, since it is larger than the sum of its proper divisors (800857).

77673623 is an equidigital number, since it uses as much as digits as its factorization.

77673623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800856.

The product of its digits is 222264, while the sum is 41.

The square root of 77673623 is about 8813.2640378012. The cubic root of 77673623 is about 426.6690959199.

The spelling of 77673623 in words is "seventy-seven million, six hundred seventy-three thousand, six hundred twenty-three".