961800629 has 4 divisors (see below), whose sum is σ = 963301740. Its totient is φ = 960299520.

The previous prime is 961800617. The next prime is 961800641. The reversal of 961800629 is 926008169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 926008169 = 223 ⋅4152503.

It is an interprime number because it is at equal distance from previous prime (961800617) and next prime (961800641).

It can be written as a sum of positive squares in 2 ways, for example, as 533517604 + 428283025 = 23098^2 + 20695^2 .

It is a cyclic number.

It is not a de Polignac number, because 961800629 - 2⁴ = 961800613 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 (961800649) 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, 749594 + ... + 750875.

It is an arithmetic number, because the mean of its divisors is an integer number (240825435).

Almost surely, 2^961800629 is an apocalyptic number.

It is an amenable number.

961800629 is a deficient number, since it is larger than the sum of its proper divisors (1501111).

961800629 is a wasteful number, since it uses less digits than its factorization.

961800629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501110.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 961800629 is about 31012.9106824883. The cubic root of 961800629 is about 987.1012129881.

The spelling of 961800629 in words is "nine hundred sixty-one million, eight hundred thousand, six hundred twenty-nine".