78573009 has 8 divisors (see below), whose sum is σ = 105407392. Its totient is φ = 52060320.

The previous prime is 78572983. The next prime is 78573013. The reversal of 78573009 is 90037587.

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

It is not a de Polignac number, because 78573009 - 2⁷ = 78572881 is a prime.

It is a super-4 number, since 4×78573009⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78573059) 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, 79852 + ... + 80829.

It is an arithmetic number, because the mean of its divisors is an integer number (13175924).

Almost surely, 2^78573009 is an apocalyptic number.

It is an amenable number.

78573009 is a deficient number, since it is larger than the sum of its proper divisors (26834383).

78573009 is a wasteful number, since it uses less digits than its factorization.

78573009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160847.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 78573009 is about 8864.1417520254. The cubic root of 78573009 is about 428.3095865484.

The spelling of 78573009 in words is "seventy-eight million, five hundred seventy-three thousand, nine".