629890757 has 4 divisors (see below), whose sum is σ = 643292736. Its totient is φ = 616488780.

The previous prime is 629890747. The next prime is 629890769. The reversal of 629890757 is 757098926.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 629890757 - 2¹⁶ = 629825221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 629890699 and 629890708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629890727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6700919 + ... + 6701012.

It is an arithmetic number, because the mean of its divisors is an integer number (160823184).

Almost surely, 2^629890757 is an apocalyptic number.

It is an amenable number.

629890757 is a deficient number, since it is larger than the sum of its proper divisors (13401979).

629890757 is a wasteful number, since it uses less digits than its factorization.

629890757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13401978.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The square root of 629890757 is about 25097.6245290266. The cubic root of 629890757 is about 857.2123351763.

The spelling of 629890757 in words is "six hundred twenty-nine million, eight hundred ninety thousand, seven hundred fifty-seven".