621077157 has 24 divisors (see below), whose sum is σ = 933174528. Its totient is φ = 397612800.

The previous prime is 621077141. The next prime is 621077231. The reversal of 621077157 is 751770126.

It is not a de Polignac number, because 621077157 - 2⁴ = 621077141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621077057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28053 + ... + 45045.

It is an arithmetic number, because the mean of its divisors is an integer number (38882272).

Almost surely, 2^621077157 is an apocalyptic number.

It is an amenable number.

621077157 is a deficient number, since it is larger than the sum of its proper divisors (312097371).

621077157 is a wasteful number, since it uses less digits than its factorization.

621077157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17161 (or 17158 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 36.

The square root of 621077157 is about 24921.4196425485. The cubic root of 621077157 is about 853.1954265090.

The spelling of 621077157 in words is "six hundred twenty-one million, seventy-seven thousand, one hundred fifty-seven".