245998620 has 216 divisors, whose sum is σ = 901044144. Its totient is φ = 56173824.

The previous prime is 245998603. The next prime is 245998631. The reversal of 245998620 is 26899542.

It is a super-3 number, since 3×245998620³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 237624 + ... + 238656.

Almost surely, 2^245998620 is an apocalyptic number.

245998620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245998620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450522072).

245998620 is an abundant number, since it is smaller than the sum of its proper divisors (655045524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245998620 is a wasteful number, since it uses less digits than its factorization.

245998620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 245998620 is about 15684.3431485032. The cubic root of 245998620 is about 626.5814839450.

The spelling of 245998620 in words is "two hundred forty-five million, nine hundred ninety-eight thousand, six hundred twenty".