65697630 has 32 divisors (see below), whose sum is σ = 165974400. Its totient is φ = 16597152.

The previous prime is 65697629. The next prime is 65697631. The reversal of 65697630 is 3679656.

It is an interprime number because it is at equal distance from previous prime (65697629) and next prime (65697631).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65697631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57060 + ... + 58199.

It is an arithmetic number, because the mean of its divisors is an integer number (5186700).

Almost surely, 2^65697630 is an apocalyptic number.

65697630 is an abundant number, since it is smaller than the sum of its proper divisors (100276770).

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

65697630 is a wasteful number, since it uses less digits than its factorization.

65697630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115288.

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 65697630 is about 8105.4074542863. The cubic root of 65697630 is about 403.5059108630.

The spelling of 65697630 in words is "sixty-five million, six hundred ninety-seven thousand, six hundred thirty".