620251541 has 8 divisors (see below), whose sum is σ = 763386624. Its totient is φ = 490748400.

The previous prime is 620251519. The next prime is 620251547. The reversal of 620251541 is 145152026.

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-620251541 is a prime.

It is a super-2 number, since 2×620251541² = 769423948225749362, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 620251541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620251547) 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, 3407885 + ... + 3408066.

It is an arithmetic number, because the mean of its divisors is an integer number (95423328).

Almost surely, 2^620251541 is an apocalyptic number.

It is an amenable number.

620251541 is a deficient number, since it is larger than the sum of its proper divisors (143135083).

620251541 is a wasteful number, since it uses less digits than its factorization.

620251541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6815971.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 620251541 is about 24904.8497485931. The cubic root of 620251541 is about 852.8171996657.

The spelling of 620251541 in words is "six hundred twenty million, two hundred fifty-one thousand, five hundred forty-one".