78473623 has 8 divisors (see below), whose sum is σ = 82209600. Its totient is φ = 74806368.

The previous prime is 78473621. The next prime is 78473651. The reversal of 78473623 is 32637487.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78473623 - 2¹ = 78473621 is a prime.

It is a super-2 number, since 2×78473623² = 12316219013492258, 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 (78473621) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14836 + ... + 19417.

It is an arithmetic number, because the mean of its divisors is an integer number (10276200).

Almost surely, 2^78473623 is an apocalyptic number.

78473623 is a deficient number, since it is larger than the sum of its proper divisors (3735977).

78473623 is a wasteful number, since it uses less digits than its factorization.

78473623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34361.

The product of its digits is 169344, while the sum is 40.

The square root of 78473623 is about 8858.5339080460. The cubic root of 78473623 is about 428.1289225705.

The spelling of 78473623 in words is "seventy-eight million, four hundred seventy-three thousand, six hundred twenty-three".