70722947 has 8 divisors (see below), whose sum is σ = 72807696. Its totient is φ = 68647392.

The previous prime is 70722943. The next prime is 70722961. The reversal of 70722947 is 74922707.

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 70722947 - 2² = 70722943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70722947.

It is not an unprimeable number, because it can be changed into a prime (70722943) 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, 15233 + ... + 19325.

It is an arithmetic number, because the mean of its divisors is an integer number (9100962).

Almost surely, 2^70722947 is an apocalyptic number.

70722947 is a deficient number, since it is larger than the sum of its proper divisors (2084749).

70722947 is a wasteful number, since it uses less digits than its factorization.

70722947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4597.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 70722947 is about 8409.6936329453. The cubic root of 70722947 is about 413.5424691014.

The spelling of 70722947 in words is "seventy million, seven hundred twenty-two thousand, nine hundred forty-seven".