62640040 has 32 divisors (see below), whose sum is σ = 147070080. Its totient is φ = 23966272.

The previous prime is 62640037. The next prime is 62640043. The reversal of 62640040 is 4004626.

It is an interprime number because it is at equal distance from previous prime (62640037) and next prime (62640043).

It is a super-2 number, since 2×62640040² = 7847549222403200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 62639993 and 62640020.

It is not an unprimeable number, because it can be changed into a prime (62640043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33124 + ... + 34963.

It is an arithmetic number, because the mean of its divisors is an integer number (4595940).

Almost surely, 2^62640040 is an apocalyptic number.

It is an amenable number.

62640040 is an abundant number, since it is smaller than the sum of its proper divisors (84430040).

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

62640040 is a wasteful number, since it uses less digits than its factorization.

62640040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68121 (or 68117 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 62640040 is about 7914.5461019568. The cubic root of 62640040 is about 397.1464414168.

Adding to 62640040 its reverse (4004626), we get a palindrome (66644666).

The spelling of 62640040 in words is "sixty-two million, six hundred forty thousand, forty".