621241487 has 8 divisors (see below), whose sum is σ = 631270656. Its totient is φ = 611234712.

The previous prime is 621241463. The next prime is 621241529. The reversal of 621241487 is 784142126.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621241487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621241427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55658 + ... + 65880.

It is an arithmetic number, because the mean of its divisors is an integer number (78908832).

Almost surely, 2^621241487 is an apocalyptic number.

621241487 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

621241487 is a deficient number, since it is larger than the sum of its proper divisors (10029169).

621241487 is a wasteful number, since it uses less digits than its factorization.

621241487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11197.

The product of its digits is 21504, while the sum is 35.

The square root of 621241487 is about 24924.7163875539. The cubic root of 621241487 is about 853.2706684974.

The spelling of 621241487 in words is "six hundred twenty-one million, two hundred forty-one thousand, four hundred eighty-seven".