72620555 has 8 divisors (see below), whose sum is σ = 99593952. Its totient is φ = 49796928.

The previous prime is 72620539. The next prime is 72620567. The reversal of 72620555 is 55502627.

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

It is a cyclic number.

It is not a de Polignac number, because 72620555 - 2⁴ = 72620539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037402 + ... + 1037471.

It is an arithmetic number, because the mean of its divisors is an integer number (12449244).

Almost surely, 2^72620555 is an apocalyptic number.

72620555 is a deficient number, since it is larger than the sum of its proper divisors (26973397).

72620555 is a wasteful number, since it uses less digits than its factorization.

72620555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074885.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 72620555 is about 8521.7694758776. The cubic root of 72620555 is about 417.2085383724.

The spelling of 72620555 in words is "seventy-two million, six hundred twenty thousand, five hundred fifty-five".