72072698 has 4 divisors (see below), whose sum is σ = 108109050. Its totient is φ = 36036348.

The previous prime is 72072697. The next prime is 72072701. The reversal of 72072698 is 89627027.

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., 69172489 + 2900209 = 8317^2 + 1703^2 .

It is not an unprimeable number, because it can be changed into a prime (72072697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18018173 + ... + 18018176.

Almost surely, 2^72072698 is an apocalyptic number.

72072698 is a deficient number, since it is larger than the sum of its proper divisors (36036352).

72072698 is a wasteful number, since it uses less digits than its factorization.

72072698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36036351.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 72072698 is about 8489.5640641908. The cubic root of 72072698 is about 416.1567341175.

The spelling of 72072698 in words is "seventy-two million, seventy-two thousand, six hundred ninety-eight".