70720307 has 8 divisors (see below), whose sum is σ = 80883456. Its totient is φ = 60572232.

The previous prime is 70720303. The next prime is 70720333. The reversal of 70720307 is 70302707.

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

It is not a de Polignac number, because 70720307 - 2² = 70720303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70720303) 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, 9338 + ... + 15120.

It is an arithmetic number, because the mean of its divisors is an integer number (10110432).

Almost surely, 2^70720307 is an apocalyptic number.

70720307 is a deficient number, since it is larger than the sum of its proper divisors (10163149).

70720307 is a wasteful number, since it uses less digits than its factorization.

70720307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7537.

The product of its (nonzero) digits is 2058, while the sum is 26.

The square root of 70720307 is about 8409.5366697577. The cubic root of 70720307 is about 413.5373233613.

The spelling of 70720307 in words is "seventy million, seven hundred twenty thousand, three hundred seven".