65709402 has 32 divisors (see below), whose sum is σ = 144115200. Its totient is φ = 19807920.

The previous prime is 65709401. The next prime is 65709433. The reversal of 65709402 is 20490756.

It is a super-2 number, since 2×65709402² = 8635451022395208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (65709401) 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, 10633 + ... + 15635.

It is an arithmetic number, because the mean of its divisors is an integer number (4503600).

Almost surely, 2^65709402 is an apocalyptic number.

65709402 is an abundant number, since it is smaller than the sum of its proper divisors (78405798).

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

65709402 is a wasteful number, since it uses less digits than its factorization.

65709402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 65709402 is about 8106.1336036362. The cubic root of 65709402 is about 403.5300100981.

The spelling of 65709402 in words is "sixty-five million, seven hundred nine thousand, four hundred two".