78373723 has 8 divisors (see below), whose sum is σ = 83259792. Its totient is φ = 73518336.

The previous prime is 78373721. The next prime is 78373739. The reversal of 78373723 is 32737387.

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

It is not a de Polignac number, because 78373723 - 2¹ = 78373721 is a prime.

It is a super-2 number, since 2×78373723² = 12284880913761458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78373721) 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, 2290 + ... + 12727.

It is an arithmetic number, because the mean of its divisors is an integer number (10407474).

Almost surely, 2^78373723 is an apocalyptic number.

78373723 is a deficient number, since it is larger than the sum of its proper divisors (4886069).

78373723 is a wasteful number, since it uses less digits than its factorization.

78373723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15341.

The product of its digits is 148176, while the sum is 40.

The square root of 78373723 is about 8852.8934817945. The cubic root of 78373723 is about 427.9471704526.

The spelling of 78373723 in words is "seventy-eight million, three hundred seventy-three thousand, seven hundred twenty-three".