70615974 has 64 divisors (see below), whose sum is σ = 167247360. Its totient is φ = 19712160.

The previous prime is 70615973. The next prime is 70616023. The reversal of 70615974 is 47951607.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70615973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144759 + ... + 145245.

It is an arithmetic number, because the mean of its divisors is an integer number (2613240).

Almost surely, 2^70615974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70615974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83623680).

70615974 is an abundant number, since it is smaller than the sum of its proper divisors (96631386).

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

70615974 is a wasteful number, since it uses less digits than its factorization.

70615974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 70615974 is about 8403.3311252146. The cubic root of 70615974 is about 413.3338607058. Note that the first 3 decimals are identical.

The spelling of 70615974 in words is "seventy million, six hundred fifteen thousand, nine hundred seventy-four".