70691400 has 384 divisors, whose sum is σ = 281232000. Its totient is φ = 16174080.

The previous prime is 70691393. The next prime is 70691407. The reversal of 70691400 is 419607.

It is an interprime number because it is at equal distance from previous prime (70691393) and next prime (70691407).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (70691407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1333774 + ... + 1333826.

It is an arithmetic number, because the mean of its divisors is an integer number (732375).

Almost surely, 2^70691400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70691400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140616000).

70691400 is an abundant number, since it is smaller than the sum of its proper divisors (210540600).

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

70691400 is a wasteful number, since it uses less digits than its factorization.

70691400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 70691400 is about 8407.8177906042. The cubic root of 70691400 is about 413.4809710771.

The spelling of 70691400 in words is "seventy million, six hundred ninety-one thousand, four hundred".