78037313 has 8 divisors (see below), whose sum is σ = 82225920. Its totient is φ = 73856880.

The previous prime is 78037301. The next prime is 78037319. The reversal of 78037313 is 31373087.

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 78037313 - 2¹⁰ = 78036289 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 78037313.

It is not an unprimeable number, because it can be changed into a prime (78037319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34256 + ... + 36462.

It is an arithmetic number, because the mean of its divisors is an integer number (10278240).

Almost surely, 2^78037313 is an apocalyptic number.

It is an amenable number.

78037313 is a deficient number, since it is larger than the sum of its proper divisors (4188607).

78037313 is a wasteful number, since it uses less digits than its factorization.

78037313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 78037313 is about 8833.8730464050. The cubic root of 78037313 is about 427.3339879555. Note that the first 3 decimals are identical.

The spelling of 78037313 in words is "seventy-eight million, thirty-seven thousand, three hundred thirteen".