72746501 has 4 divisors (see below), whose sum is σ = 72933900. Its totient is φ = 72559104.

The previous prime is 72746473. The next prime is 72746503. The reversal of 72746501 is 10564727.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37332100 + 35414401 = 6110^2 + 5951^2 .

It is a cyclic number.

It is not a de Polignac number, because 72746501 - 2⁶ = 72746437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72746503) 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, 93116 + ... + 93893.

It is an arithmetic number, because the mean of its divisors is an integer number (18233475).

Almost surely, 2^72746501 is an apocalyptic number.

It is an amenable number.

72746501 is a deficient number, since it is larger than the sum of its proper divisors (187399).

72746501 is a wasteful number, since it uses less digits than its factorization.

72746501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187398.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 72746501 is about 8529.1559371370. The cubic root of 72746501 is about 417.4495876597.

It can be divided in two parts, 7274 and 6501, that multiplied together give a palindrome (47288274).

The spelling of 72746501 in words is "seventy-two million, seven hundred forty-six thousand, five hundred one".