620999354 has 16 divisors (see below), whose sum is σ = 939751848. Its totient is φ = 307756032.

The previous prime is 620999339. The next prime is 620999371. The reversal of 620999354 is 453999026.

It can be written as a sum of positive squares in 4 ways, for example, as 455182225 + 165817129 = 21335^2 + 12877^2 .

It is a junction number, because it is equal to n+sod(n) for n = 620999299 and 620999308.

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, 232394 + ... + 235050.

Almost surely, 2^620999354 is an apocalyptic number.

620999354 is a deficient number, since it is larger than the sum of its proper divisors (318752494).

620999354 is a wasteful number, since it uses less digits than its factorization.

620999354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3649.

The product of its (nonzero) digits is 524880, while the sum is 47.

The square root of 620999354 is about 24919.8586272073. The cubic root of 620999354 is about 853.1597981199.

The spelling of 620999354 in words is "six hundred twenty million, nine hundred ninety-nine thousand, three hundred fifty-four".