70650737640 has 192 divisors, whose sum is σ = 265123272960. Its totient is φ = 15982202880.

The previous prime is 70650737639. The next prime is 70650737653. The reversal of 70650737640 is 4673705607.

70650737640 is a `hidden beast` number, since 70 + 6 + 507 + 3 + 76 + 4 + 0 = 666.

It is a super-2 number, since 2×70650737640² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99925 + ... + 388955.

It is an arithmetic number, because the mean of its divisors is an integer number (1380850380).

Almost surely, 2^70650737640 is an apocalyptic number.

70650737640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70650737640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132561636480).

70650737640 is an abundant number, since it is smaller than the sum of its proper divisors (194472535320).

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

70650737640 is a wasteful number, since it uses less digits than its factorization.

70650737640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289152 (or 289145 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 45.

The spelling of 70650737640 in words is "seventy billion, six hundred fifty million, seven hundred thirty-seven thousand, six hundred forty".