711721057 has 8 divisors (see below), whose sum is σ = 749424960. Its totient is φ = 674041680.

The previous prime is 711721051. The next prime is 711721063. The reversal of 711721057 is 750127117.

It is an interprime number because it is at equal distance from previous prime (711721051) and next prime (711721063).

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 711721057 - 2¹¹ = 711719009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (711721051) 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, 110508 + ... + 116770.

It is an arithmetic number, because the mean of its divisors is an integer number (93678120).

Almost surely, 2^711721057 is an apocalyptic number.

It is an amenable number.

711721057 is a deficient number, since it is larger than the sum of its proper divisors (37703903).

711721057 is a wasteful number, since it uses less digits than its factorization.

711721057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12263.

The product of its (nonzero) digits is 3430, while the sum is 31.

The square root of 711721057 is about 26678.1007007620. The cubic root of 711721057 is about 892.8323925189.

The spelling of 711721057 in words is "seven hundred eleven million, seven hundred twenty-one thousand, fifty-seven".