70727147 has 4 divisors (see below), whose sum is σ = 71723376. Its totient is φ = 69730920.

The previous prime is 70727119. The next prime is 70727149. The reversal of 70727147 is 74172707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74172707 = 7 ⋅10596101.

It is a cyclic number.

It is not a de Polignac number, because 70727147 - 2²⁰ = 69678571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70727149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498008 + ... + 498149.

It is an arithmetic number, because the mean of its divisors is an integer number (17930844).

Almost surely, 2^70727147 is an apocalyptic number.

70727147 is a deficient number, since it is larger than the sum of its proper divisors (996229).

70727147 is an equidigital number, since it uses as much as digits as its factorization.

70727147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996228.

The product of its (nonzero) digits is 19208, while the sum is 35.

The square root of 70727147 is about 8409.9433410695. The cubic root of 70727147 is about 413.5506552421.

The spelling of 70727147 in words is "seventy million, seven hundred twenty-seven thousand, one hundred forty-seven".