72643498 has 8 divisors (see below), whose sum is σ = 114700320. Its totient is φ = 34410060.

The previous prime is 72643489. The next prime is 72643507. The reversal of 72643498 is 89434627.

It is an interprime number because it is at equal distance from previous prime (72643489) and next prime (72643507).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 955798 + ... + 955873.

It is an arithmetic number, because the mean of its divisors is an integer number (14337540).

Almost surely, 2^72643498 is an apocalyptic number.

72643498 is a deficient number, since it is larger than the sum of its proper divisors (42056822).

72643498 is a wasteful number, since it uses less digits than its factorization.

72643498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911692.

The product of its digits is 290304, while the sum is 43.

The square root of 72643498 is about 8523.1155101876. The cubic root of 72643498 is about 417.2524699546.

It can be divided in two parts, 7 and 2643498, that multiplied together give a triangular number (18504486 = T₆₀₈₃).

The spelling of 72643498 in words is "seventy-two million, six hundred forty-three thousand, four hundred ninety-eight".