722486546 has 4 divisors (see below), whose sum is σ = 1083729822. Its totient is φ = 361243272.

The previous prime is 722486539. The next prime is 722486573. The reversal of 722486546 is 645684227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 415711321 + 306775225 = 20389^2 + 17515^2 .

It is a junction number, because it is equal to n+sod(n) for n = 722486497 and 722486506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180621635 + ... + 180621638.

Almost surely, 2^722486546 is an apocalyptic number.

722486546 is a deficient number, since it is larger than the sum of its proper divisors (361243276).

722486546 is a wasteful number, since it uses less digits than its factorization.

722486546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361243275.

The product of its digits is 645120, while the sum is 44.

The square root of 722486546 is about 26879.1098438918. The cubic root of 722486546 is about 897.3115433638.

The spelling of 722486546 in words is "seven hundred twenty-two million, four hundred eighty-six thousand, five hundred forty-six".