2665945630 has 32 divisors (see below), whose sum is σ = 4903607808. Its totient is φ = 1043296800.

The previous prime is 2665945577. The next prime is 2665945679. The reversal of 2665945630 is 365495662.

It is a super-2 number, since 2×2665945630² = 14214532204232193800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78679 + ... + 107341.

It is an arithmetic number, because the mean of its divisors is an integer number (153237744).

Almost surely, 2^2665945630 is an apocalyptic number.

2665945630 is a deficient number, since it is larger than the sum of its proper divisors (2237662178).

2665945630 is a wasteful number, since it uses less digits than its factorization.

2665945630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28872.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The square root of 2665945630 is about 51632.7960699399. The cubic root of 2665945630 is about 1386.5975527092.

The spelling of 2665945630 in words is "two billion, six hundred sixty-five million, nine hundred forty-five thousand, six hundred thirty".