72464347 has 4 divisors (see below), whose sum is σ = 76278280. Its totient is φ = 68650416.

The previous prime is 72464341. The next prime is 72464351. The reversal of 72464347 is 74346427.

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

It is a cyclic number.

It is not a de Polignac number, because 72464347 - 2³ = 72464339 is a prime.

It is a super-2 number, since 2×72464347² = 10502163172272818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72464341) 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, 1906938 + ... + 1906975.

It is an arithmetic number, because the mean of its divisors is an integer number (19069570).

Almost surely, 2^72464347 is an apocalyptic number.

72464347 is a deficient number, since it is larger than the sum of its proper divisors (3813933).

72464347 is a wasteful number, since it uses less digits than its factorization.

72464347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813932.

The product of its digits is 112896, while the sum is 37.

The square root of 72464347 is about 8512.5993092592. The cubic root of 72464347 is about 416.9091828366.

The spelling of 72464347 in words is "seventy-two million, four hundred sixty-four thousand, three hundred forty-seven".