80623719 has 12 divisors (see below), whose sum is σ = 127043592. Its totient is φ = 48862800.

The previous prime is 80623691. The next prime is 80623721. The reversal of 80623719 is 91732608.

It is not a de Polignac number, because 80623719 - 2¹⁶ = 80558183 is a prime.

It is a super-2 number, since 2×80623719² = 13000368130781922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80623729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407092 + ... + 407289.

It is an arithmetic number, because the mean of its divisors is an integer number (10586966).

Almost surely, 2^80623719 is an apocalyptic number.

80623719 is a deficient number, since it is larger than the sum of its proper divisors (46419873).

80623719 is a wasteful number, since it uses less digits than its factorization.

80623719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814398 (or 814395 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 80623719 is about 8979.0711657721. The cubic root of 80623719 is about 432.0038419154.

Subtracting 80623719 from its reverse (91732608), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 8062 and 3719, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 80623719 in words is "eighty million, six hundred twenty-three thousand, seven hundred nineteen".