10621764 has 18 divisors (see below), whose sum is σ = 26849550. Its totient is φ = 3540576.

The previous prime is 10621727. The next prime is 10621777. The reversal of 10621764 is 46712601.

It can be written as a sum of positive squares in only one way, i.e., 9734400 + 887364 = 3120^2 + 942^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×10621764² = 225643740943392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147489 + ... + 147560.

Almost surely, 2^10621764 is an apocalyptic number.

It is an amenable number.

10621764 is an abundant number, since it is smaller than the sum of its proper divisors (16227786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10621764 is a wasteful number, since it uses less digits than its factorization.

10621764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295059 (or 295054 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 10621764 is about 3259.1047850598. The cubic root of 10621764 is about 219.8191626894.

The spelling of 10621764 in words is "ten million, six hundred twenty-one thousand, seven hundred sixty-four".