722140810 has 8 divisors (see below), whose sum is σ = 1299853476. Its totient is φ = 288856320.

The previous prime is 722140801. The next prime is 722140813. The reversal of 722140810 is 18041227.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 698492041 + 23648769 = 26429^2 + 4863^2 .

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

It is a super-2 number, since 2×722140810² = 1042974698934912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (722140813) 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, 36107031 + ... + 36107050.

Almost surely, 2^722140810 is an apocalyptic number.

722140810 is a deficient number, since it is larger than the sum of its proper divisors (577712666).

722140810 is a wasteful number, since it uses less digits than its factorization.

722140810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72214088.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 722140810 is about 26872.6777601340. The cubic root of 722140810 is about 897.1683884938.

The spelling of 722140810 in words is "seven hundred twenty-two million, one hundred forty thousand, eight hundred ten".