620342515 has 16 divisors (see below), whose sum is σ = 805287168. Its totient is φ = 456034176.

The previous prime is 620342507. The next prime is 620342521. The reversal of 620342515 is 515243026.

It is not a de Polignac number, because 620342515 - 2³ = 620342507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6904 + ... + 35893.

It is an arithmetic number, because the mean of its divisors is an integer number (50330448).

Almost surely, 2^620342515 is an apocalyptic number.

620342515 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

620342515 is a deficient number, since it is larger than the sum of its proper divisors (184944653).

620342515 is a wasteful number, since it uses less digits than its factorization.

620342515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43038.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 620342515 is about 24906.6761130425. The cubic root of 620342515 is about 852.8588926424.

The spelling of 620342515 in words is "six hundred twenty million, three hundred forty-two thousand, five hundred fifteen".