65137340 has 24 divisors (see below), whose sum is σ = 137140080. Its totient is φ = 25987968.

The previous prime is 65137327. The next prime is 65137349. The reversal of 65137340 is 4373156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65137349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4199 + ... + 12161.

It is an arithmetic number, because the mean of its divisors is an integer number (5714170).

Almost surely, 2^65137340 is an apocalyptic number.

It is an amenable number.

65137340 is an abundant number, since it is smaller than the sum of its proper divisors (72002740).

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

65137340 is a wasteful number, since it uses less digits than its factorization.

65137340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8381 (or 8379 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 65137340 is about 8070.7707190825. The cubic root of 65137340 is about 402.3555594529.

The spelling of 65137340 in words is "sixty-five million, one hundred thirty-seven thousand, three hundred forty".