620700385 has 8 divisors (see below), whose sum is σ = 755044200. Its totient is φ = 489757824.

The previous prime is 620700373. The next prime is 620700403. The reversal of 620700385 is 583007026.

It can be written as a sum of positive squares in 4 ways, for example, as 3326976 + 617373409 = 1824^2 + 24847^2 .

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 620700385 - 2¹⁵ = 620667617 is a prime.

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, 849910 + ... + 850639.

It is an arithmetic number, because the mean of its divisors is an integer number (94380525).

Almost surely, 2^620700385 is an apocalyptic number.

It is an amenable number.

620700385 is a deficient number, since it is larger than the sum of its proper divisors (134343815).

620700385 is a wasteful number, since it uses less digits than its factorization.

620700385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700627.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 620700385 is about 24913.8592955808. The cubic root of 620700385 is about 853.0228633155.

The spelling of 620700385 in words is "six hundred twenty million, seven hundred thousand, three hundred eighty-five".