620605524155 has 4 divisors (see below), whose sum is σ = 744726628992. Its totient is φ = 496484419320.

The previous prime is 620605524137. The next prime is 620605524173. The reversal of 620605524155 is 551425506026.

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

It is an interprime number because it is at equal distance from previous prime (620605524137) and next prime (620605524173).

It is a de Polignac number, because none of the positive numbers 2^k-620605524155 is a prime.

It is a super-2 number, since 2×620605524155² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62060552411 + ... + 62060552420.

It is an arithmetic number, because the mean of its divisors is an integer number (186181657248).

Almost surely, 2^620605524155 is an apocalyptic number.

620605524155 is a deficient number, since it is larger than the sum of its proper divisors (124121104837).

620605524155 is a wasteful number, since it uses less digits than its factorization.

620605524155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124121104836.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 620605524155 in words is "six hundred twenty billion, six hundred five million, five hundred twenty-four thousand, one hundred fifty-five".