617946420 has 96 divisors (see below), whose sum is σ = 2129557248. Its totient is φ = 130378752.

The previous prime is 617946391. The next prime is 617946449. The reversal of 617946420 is 24649716.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (617946391) and next prime (617946449).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51129 + ... + 62048.

It is an arithmetic number, because the mean of its divisors is an integer number (22182888).

Almost surely, 2^617946420 is an apocalyptic number.

617946420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

617946420 is an abundant number, since it is smaller than the sum of its proper divisors (1511610828).

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

617946420 is a wasteful number, since it uses less digits than its factorization.

617946420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113209 (or 113207 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 617946420 is about 24858.5281141101. The cubic root of 617946420 is about 851.7594099052.

The spelling of 617946420 in words is "six hundred seventeen million, nine hundred forty-six thousand, four hundred twenty".