620694249 has 8 divisors (see below), whose sum is σ = 945819840. Its totient is φ = 354682416.

The previous prime is 620694247. The next prime is 620694251. The reversal of 620694249 is 942496026.

It is an interprime number because it is at equal distance from previous prime (620694247) and next prime (620694251).

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

It is not a de Polignac number, because 620694249 - 2¹ = 620694247 is a prime.

It is a super-2 number, since 2×620694249² = 770522701483348002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 620694249.

It is not an unprimeable number, because it can be changed into a prime (620694241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14778414 + ... + 14778455.

It is an arithmetic number, because the mean of its divisors is an integer number (118227480).

Almost surely, 2^620694249 is an apocalyptic number.

It is an amenable number.

620694249 is a deficient number, since it is larger than the sum of its proper divisors (325125591).

620694249 is a wasteful number, since it uses less digits than its factorization.

620694249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29556879.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 620694249 is about 24913.7361509670. The cubic root of 620694249 is about 853.0200524233.

The spelling of 620694249 in words is "six hundred twenty million, six hundred ninety-four thousand, two hundred forty-nine".