72650654 has 4 divisors (see below), whose sum is σ = 108975984. Its totient is φ = 36325326.

The previous prime is 72650621. The next prime is 72650657. The reversal of 72650654 is 45605627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45605627 = 67 ⋅680681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72650657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18162662 + ... + 18162665.

It is an arithmetic number, because the mean of its divisors is an integer number (27243996).

Almost surely, 2^72650654 is an apocalyptic number.

72650654 is a deficient number, since it is larger than the sum of its proper divisors (36325330).

72650654 is a wasteful number, since it uses less digits than its factorization.

72650654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36325329.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 72650654 is about 8523.5352993931. The cubic root of 72650654 is about 417.2661704725.

The spelling of 72650654 in words is "seventy-two million, six hundred fifty thousand, six hundred fifty-four".