621376087 has 2 divisors, whose sum is σ = 621376088. Its totient is φ = 621376086.

The previous prime is 621376043. The next prime is 621376103. The reversal of 621376087 is 780673126.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 621376087 - 2²⁷ = 487158359 is a prime.

It is a super-2 number, since 2×621376087² = 772216482990863138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621376387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310688043 + 310688044.

It is an arithmetic number, because the mean of its divisors is an integer number (310688044).

Almost surely, 2^621376087 is an apocalyptic number.

621376087 is a deficient number, since it is larger than the sum of its proper divisors (1).

621376087 is an equidigital number, since it uses as much as digits as its factorization.

621376087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 621376087 is about 24927.4163723399. The cubic root of 621376087 is about 853.3322880880.

The spelling of 621376087 in words is "six hundred twenty-one million, three hundred seventy-six thousand, eighty-seven".